Skin Structure Infections With Suspected or Proven Methicillin-Resistant Staphylococcus Aureus (MRSA)

Sponsor
Pfizer (Industry)
Overall Status
Completed
CT.gov ID
NCT00087490
Collaborator
(none)
1,077
126
33
8.5
0.3

Study Details

Study Description

Brief Summary

To determine if linezolid is superior to vancomycin in the treatment of complicated skin and soft tissue infections due to MRSA in adult subjects

Study Design

Study Type:
Interventional
Actual Enrollment :
1077 participants
Allocation:
Randomized
Intervention Model:
Parallel Assignment
Masking:
None (Open Label)
Primary Purpose:
Treatment
Official Title:
Linezolid in the Treatment of Subjects With Complicated Skin and Soft Tissue Infections Proven to be Due to Methicillin-Resistant Staphylococcus Aureus
Study Start Date :
Oct 1, 2004
Actual Primary Completion Date :
Jul 1, 2007
Actual Study Completion Date :
Jul 1, 2007

Outcome Measures

Primary Outcome Measures

  1. Clinical Outcome in Participants With Baseline Methicillin-Resistant Staphylococcus Aureus (MRSA) at End of Study (EOS) for Per-Protocol (PP) Population [EOS (6 to 28 days after the last dose of study drug)]

    Clinical response (CR) was based primarily on global assessment of clinical presentation of participant made by investigator at evaluation time point. At EOS, CR was evaluated as "success" (cure: resolution of clinical signs or (/) symptoms of infection when compared to baseline); "failure": persistence/progression of baseline signs/symptoms of infection after at least 2 days of treatment/development of new clinical findings consistent with active infection; "unknown": extenuating circumstances precluding classification to 1 of above. "Unknown" was excluded from present analysis.

Secondary Outcome Measures

  1. Clinical Outcome in Participants With Baseline MRSA at End of Treatment (EOT) for PP Population [EOT (within 72 hours of last dose of study drug)]

    CR evaluated at EOT visit as "success" (cure: resolution of clinical sign/symptoms of infection when compared with baseline; and improvement: 2/more improvement in clinical sign/symptoms of infection when compared with baseline); "failure": persistence/progression of baseline signs/symptoms of infection after at least 2 days of treatment/development of new clinical findings consistent with active infection; "unknown": extenuating circumstances precluding classification to 1 of above. "Unknown": excluded from present analysis.

  2. Clinical Outcome in Participants With Baseline MRSA at EOS for Modified-Intent to Treat (mITT) Population [EOS (6 to 28 days after the last dose of study drug)]

    CR was based primarily on global assessment of clinical presentation of participant made by investigator at evaluation time point. At EOS, CR was evaluated as "success" (cure: resolution of clinical signs/symptoms of infection when compared to baseline); "failure": persistence/progression of baseline signs/symptoms of infection after at least 2 days of treatment/development of new clinical findings consistent with active infection; "unknown": extenuating circumstances precluding classification to 1 of above. "Unknown" was excluded from present analysis.

  3. Clinical Outcome in Participants With Baseline MRSA at EOT for mITT Population [EOT (within 72 hours of last dose of study drug)]

    CR evaluated at EOT visit as "success" (cure: resolution of clinical sign/symptoms of infection when compared with baseline; and improvement: 2/more improvement in clinical sign/symptoms of infection when compared with baseline); "failure": persistence/progression of baseline signs/symptoms of infection after at least 2 days of treatment/development of new clinical findings consistent with active infection; "unknown": extenuating circumstances precluding classification to 1 of above. "Unknown": excluded from present analysis.

  4. Microbiological Outcome in Participants With Baseline MRSA at EOS for PP Population [EOS (6 to 28 days after the last dose of study drug)]

    Microbiological outcome dichotomized to "success" (eradication: absence of baseline isolate (BI) in culture of original infection site (IS); presumed eradication: participant cured and no specimen available for culture; superinfection: clinically failed or improved with new pathogen identified from primary IS other than BI; colonization: isolate was present but not producing infection) and "failure" (persistence: BI present in original IS; presumed persistence: clinically failed and no specimen available for culture; recurrence: presence of isolate at EOS, that was eradicated at EOT).

  5. Microbiological Outcome in Participants With Baseline MRSA at EOT for PP Population [EOT (within 72 hours of last dose of study drug)]

    Microbiological outcome dichotomized to "success" (eradication: absence of baseline isolate (BI) in culture of original infection site (IS); presumed eradication: participant cured and no specimen available for culture; superinfection: clinically failed or improved with new pathogen identified from primary IS other than BI; colonization: isolate was present but not producing infection) and "failure" (persistence: BI present in original IS; presumed persistence: clinically failed and no specimen available for culture).

  6. Microbiological Outcome in Participants With Baseline MRSA at EOS for mITT Population [EOS (6 to 28 days after the last dose of study drug)]

    Microbiological outcome dichotomized to "success" (eradication: absence of baseline isolate (BI) in culture of original infection site (IS); presumed eradication: participant cured and no specimen available for culture; superinfection: clinically failed or improved with new pathogen identified from primary IS other than BI; colonization: isolate was present but not producing infection) and "failure" (persistence: BI present in original IS; presumed persistence: clinically failed and no specimen available for culture; recurrence: presence of isolate at EOS, that was eradicated at EOT).

  7. Microbiological Outcome in Participants With Baseline MRSA at EOT for mITT Population [EOT (within 72 hours of last dose of study drug)]

    Microbiological outcome dichotomized to "success" (eradication: absence of baseline isolate (BI) in culture of original infection site (IS); presumed eradication: participant cured and no specimen available for culture; superinfection: clinically failed or improved with new pathogen identified from primary IS other than BI; colonization: isolate was present but not producing infection) and "failure" (persistence: BI present in original IS; presumed persistence: clinically failed and no specimen available for culture).

  8. Number of Participants With Clinical Signs and Symptoms at EOT and EOS for PP Population [EOT (within 72 hours of last dose of study drug), EOS (6 to 28 days after the last dose of study drug)]

    Participant's clinical evaluation of signs and symptoms were based on global assessment by investigator at specific timepoints. Signs and symptoms of an active skin or soft tissue infection caused by suspected MRSA included purulent discharge, nonpurulent discharge, erythema, swelling, induration, tenderness, pain and local skin warmth. It was recorded by the sponsor using wound parameter score ranging from 0 to 3; "0= none, 1= mild, 2= moderate and 3= severe".

  9. Number of Participants With Clinical Signs and Symptoms at EOT and EOS for mITT Population [EOT (within 72 hours of last dose of study drug), EOS (6 to 28 days after the last dose of study drug)]

    Participant's clinical evaluation of signs and symptoms were based on global assessment by investigator at specific timepoints. Signs and symptoms of an active skin or soft tissue infection caused by suspected MRSA included purulent discharge, nonpurulent discharge, erythema, swelling, induration, tenderness, pain and local skin warmth. It was recorded using wound parameter score ranging from 0 to 3; "0= none, 1= mild, 2= moderate and 3= severe".

  10. Duration of Hospital Stay for PP Population [Baseline up to EOS (6 to 28 days after the last dose of study drug)]

    Duration of Hospital Stay was defined as the number of days the participant was cared as an inpatient in the hospital during the maximum 34 days of the study period. The number of days in the hospital was counted from start of study medication to date of discharge or last date known to be in the hospital (for missing discharge dates and participants who died) or Day 34 for participants who continued hospitalization beyond EOS period.

  11. Duration of Hospital Stay for mITT Population [Baseline up to EOS (6 to 28 days after the last dose of study drug)]

    Duration of Hospital Stay was defined as the number of days the participant was cared as an inpatient in the hospital during the maximum 34 days of the study period. The number of days in the hospital was counted from start of study medication to date of discharge or last date known to be in the hospital (for missing discharge dates and participants who died) or Day 34 for participants who continued hospitalization beyond EOS period.

  12. Duration of Intravenous Therapy for PP Population [Baseline up to EOS (6 to 28 days after the last dose of study drug)]

    Duration of intravenous antibiotic treatment was measured as the number of days intravenous doses of study medication was administered, before and after discharge.

  13. Duration of Intravenous Therapy for mITT Population [Baseline up to EOS (6 to 28 days after the last dose of study drug)]

    Duration of intravenous antibiotic treatment was measured as the number of days intravenous doses of study medication was administered, before and after discharge.

  14. Number of Participants Using Medical Resources [Baseline up to EOS (6 to 28 days after the last dose of study drug)]

    Medical resources utilization included a daily log of the participants' location in the hospital and outside of the hospital (non-hospital location), adjusted duration of stay (difference between duration of stay and the duration of discharge delay) and daily log of study drug dosing.

Eligibility Criteria

Criteria

Ages Eligible for Study:
18 Years and Older
Sexes Eligible for Study:
All
Accepts Healthy Volunteers:
No
Inclusion Criteria:
  • Male and female subjects with signs or symptoms consistent with infection, and if available, laboratory findings consistent with staphylococcal infection (e.g., Gram stain and culture results).

  • Signs and symptoms consistent with infection

  • Infection suspected to be due to Methicillin Resistant Staphylococcus Aureus

Exclusion Criteria:
  • Subjects who were treated with a previous antibiotic (systemic or topical) with MRSA activity (other than linezolid or vancomycin) for more than 24 hours and treatment extended into the 72 hour period prior to the first dose of study drug, unless documented to be a treatment failure (72 hours of treatment and not responding).

  • Subjects with uncomplicated skin or superficial skin structure infection such as superficial/simple cellulitis, impetiginous lesion, furuncle, or simple abscess that only need surgical drainage for cure.

  • Subjects excluded with necrotizing fasciitis, gas gangrene, osteomyelitis

Contacts and Locations

Locations

Site City State Country Postal Code
1 Pfizer Investigational Site Montgomery Alabama United States 36106
2 Pfizer Investigational Site Tucson Arizona United States 85723
3 Pfizer Investigational Site Los Angeles California United States 90033
4 Pfizer Investigational Site Palm Springs California United States 92262
5 Pfizer Investigational Site Rancho Mirage California United States 92270
6 Pfizer Investigational Site San Pedro California United States 90732
7 Pfizer Investigational Site Santa Fe Springs California United States 90670
8 Pfizer Investigational Site Sylmar California United States 91342
9 Pfizer Investigational Site Torrance California United States 90502
10 Pfizer Investigational Site Torrance California United States 90503
11 Pfizer Investigational Site Torrance California United States 90509
12 Pfizer Investigational Site Denver Colorado United States 80205
13 Pfizer Investigational Site Denver Colorado United States 80218
14 Pfizer Investigational Site Hartford Connecticut United States 06102
15 Pfizer Investigational Site Hartford Connecticut United States 06106
16 Pfizer Investigational Site New Haven Connecticut United States 06510
17 Pfizer Investigational Site New Haven Connecticut United States 06515
18 Pfizer Investigational Site Atlantis Florida United States 33462
19 Pfizer Investigational Site Melbourne Florida United States 32901
20 Pfizer Investigational Site Miami Florida United States 33136
21 Pfizer Investigational Site Pensacola Florida United States 32501-6390
22 Pfizer Investigational Site Atlanta Georgia United States 30309
23 Pfizer Investigational Site Augusta Georgia United States 30909
24 Pfizer Investigational Site Blue Ridge Georgia United States 30513
25 Pfizer Investigational Site Honolulu Hawaii United States 96813
26 Pfizer Investigational Site Honolulu Hawaii United States 96817
27 Pfizer Investigational Site Chicago Illinois United States 60637
28 Pfizer Investigational Site Decatur Illinois United States 62526
29 Pfizer Investigational Site Hines Illinois United States 60141
30 Pfizer Investigational Site Maywood Illinois United States 60153
31 Pfizer Investigational Site North Chicago Illinois United States 60064
32 Pfizer Investigational Site Northlake Illinois United States 60164
33 Pfizer Investigational Site Springfield Illinois United States 62701
34 Pfizer Investigational Site Springfield Illinois United States 62702
35 Pfizer Investigational Site Iowa City Iowa United States 52242
36 Pfizer Investigational Site Louisville Kentucky United States 40202-1798
37 Pfizer Investigational Site Louisville Kentucky United States 40217
38 Pfizer Investigational Site Louisville Kentucky United States 40222
39 Pfizer Investigational Site New Orleans Louisiana United States 70121
40 Pfizer Investigational Site Baltimore Maryland United States 21201
41 Pfizer Investigational Site Baltimore Maryland United States 21230
42 Pfizer Investigational Site Baltimore Maryland United States 21237
43 Pfizer Investigational Site Boston Massachusetts United States 02111
44 Pfizer Investigational Site West Roxbury Massachusetts United States 02132
45 Pfizer Investigational Site East Lansing Michigan United States 48824
46 Pfizer Investigational Site Lansing Michigan United States 48912
47 Pfizer Investigational Site Minneapolis Minnesota United States 55422-2998
48 Pfizer Investigational Site Mpls Minnesota United States 55422
49 Pfizer Investigational Site St. Paul Minnesota United States 55101
50 Pfizer Investigational Site Butte Montana United States 59701
51 Pfizer Investigational Site Lincoln Nebraska United States 46851
52 Pfizer Investigational Site Lincoln Nebraska United States 68510
53 Pfizer Investigational Site Somers Point New Jersey United States 08244
54 Pfizer Investigational Site Stony Brook New York United States 11794
55 Pfizer Investigational Site Winston-Salem North Carolina United States 27103
56 Pfizer Investigational Site Akron Ohio United States 44304
57 Pfizer Investigational Site Akron Ohio United States 44309
58 Pfizer Investigational Site Akron Ohio United States 44310
59 Pfizer Investigational Site Columbus Ohio United States 43214
60 Pfizer Investigational Site Columbus Ohio United States 43215
61 Pfizer Investigational Site Toledo Ohio United States 43608
62 Pfizer Investigational Site Philadelphia Pennsylvania United States 19107
63 Pfizer Investigational Site Philadelphia Pennsylvania United States 19140
64 Pfizer Investigational Site Philadelphia Pennsylvania United States 19141
65 Pfizer Investigational Site West Reading Pennsylvania United States 19611
66 Pfizer Investigational Site Ducktown Tennessee United States 37326
67 Pfizer Investigational Site Jackson Tennessee United States 38301
68 Pfizer Investigational Site Dallas Texas United States 75235
69 Pfizer Investigational Site Dallas Texas United States 75390-9016
70 Pfizer Investigational Site Dallas Texas United States 75390
71 Pfizer Investigational Site Fort Worth Texas United States 76107
72 Pfizer Investigational Site Forth Worth Texas United States 76104
73 Pfizer Investigational Site Houston Texas United States 77030
74 Pfizer Investigational Site St. George Utah United States 84770
75 Pfizer Investigational Site St. George Utah United States 84790
76 Pfizer Investigational Site Tacoma Washington United States 98431
77 Pfizer Investigational Site Loma Hermosa Buenos Aires Argentina 1653
78 Pfizer Investigational Site Buenos Aires Argentina C1039AAO
79 Pfizer Investigational Site Buenos Aires Argentina C1425DQK
80 Pfizer Investigational Site Cordoba Argentina 5000
81 Pfizer Investigational Site Charleroi Belgium 6000
82 Pfizer Investigational Site Gent Belgium 9000
83 Pfizer Investigational Site Montigny-le-Tilleul Belgium 6110
84 Pfizer Investigational Site São José do Rio Preto SP Brazil 15090-000
85 Pfizer Investigational Site São Paulo SP Brazil 01221-020
86 Pfizer Investigational Site Providencia Santiago Chile
87 Pfizer Investigational Site Santiago Chile
88 Pfizer Investigational Site Barranquilla Atlantico Colombia
89 Pfizer Investigational Site Bogota Cundinamarca Colombia
90 Pfizer Investigational Site Floridablanca Santander Colombia
91 Pfizer Investigational Site Genova Italy 16132
92 Pfizer Investigational Site Napoli Italy 80131
93 Pfizer Investigational Site Roma Italy 00149
94 Pfizer Investigational Site Roma Italy 00168
95 Pfizer Investigational Site Udine Italy 33100
96 Pfizer Investigational Site Varese Italy 21100
97 Pfizer Investigational Site Kuala Lumpur Malaysia 50586
98 Pfizer Investigational Site Kuala Lumpur Malaysia 50603
99 Pfizer Investigational Site Mexico DF Mexico 14000
100 Pfizer Investigational Site Guadalajara Jalisco Mexico 44280
101 Pfizer Investigational Site Monterrey Nuevo Leon Mexico 64020
102 Pfizer Investigational Site Pragal Almada Portugal 2800-525
103 Pfizer Investigational Site Amadora Portugal 2720
104 Pfizer Investigational Site Coimbra Portugal 3090
105 Pfizer Investigational Site Lisboa Portugal 1449-005
106 Pfizer Investigational Site Lisboa Portugal
107 Pfizer Investigational Site Moscow Russian Federation 119048
108 Pfizer Investigational Site Moscow Russian Federation
109 Pfizer Investigational Site Smolensk Russian Federation
110 Pfizer Investigational Site Singapore Singapore 529889
111 Pfizer Investigational Site Kuilsriver Western Province South Africa 7580
112 Pfizer Investigational Site Johannesburg South Africa 2113
113 Pfizer Investigational Site Parow South Africa 7499
114 Pfizer Investigational Site Pretoria South Africa 0001
115 Pfizer Investigational Site Pretoria South Africa 0184
116 Pfizer Investigational Site Cordoba Spain 14004
117 Pfizer Investigational Site Gerona Spain 17007
118 Pfizer Investigational Site Sevilla Spain 41013
119 Pfizer Investigational Site Winchester Hampshire United Kingdom SO22 5DG
120 Pfizer Investigational Site Edinburgh United Kingdom EH4 2XU
121 Pfizer Investigational Site Leeds United Kingdom LS1 3EX
122 Pfizer Investigational Site Ciudad Bolívar Estado Bolívar Venezuela 8001
123 Pfizer Investigational Site Distrito Capital Estado Miranda Venezuela 1040
124 Pfizer Investigational Site Distrito Capital Estado Miranda Venezuela 1070
125 Pfizer Investigational Site Maracaibo Estado Zulia Venezuela 4002
126 Pfizer Investigational Site Valencia Venezuela 2002

Sponsors and Collaborators

  • Pfizer

Investigators

  • Study Director: Pfizer CT.gov Call Center, Pfizer

Study Documents (Full-Text)

None provided.

More Information

Additional Information:

Publications

None provided.
Responsible Party:
Pfizer
ClinicalTrials.gov Identifier:
NCT00087490
Other Study ID Numbers:
  • A5951002
First Posted:
Jul 13, 2004
Last Update Posted:
Aug 8, 2012
Last Verified:
Jun 1, 2012

Study Results

Participant Flow

Recruitment Details
Pre-assignment Detail
Arm/Group Title Linezolid Vancomycin
Arm/Group Description Linezolid intravenous infusion or oral tablets every 12 hours (twice daily) at a dose of 600 milligram (mg). Intravenous infusion was administered over a period of 60-90 minutes. Duration of study treatment was 7 to 14 days except in cases of documented methicillin-resistant Staphylococcus aureus (MRSA) bacteremia where it could be extended to 21 days based upon investigator's discretion. Vancomycin intravenous infusion every 12 hours (twice daily) at a dose of 15 mg per kilogram per dose (15 mg/kg/dose) over a period of at minimum 60 minutes for 7 to 14 days except in cases of documented MRSA bacteremia where it could be extended to 21 days based upon investigator's discretion.
Period Title: Overall Study
STARTED 544 533
Treated 537 515
COMPLETED 286 264
NOT COMPLETED 258 269

Baseline Characteristics

Arm/Group Title Linezolid Vancomycin Total
Arm/Group Description Linezolid intravenous infusion or oral tablets every 12 hours (twice daily) at a dose of 600 mg. Intravenous infusion was administered over a period of 60-90 minutes. Duration of study treatment was 7 to 14 days except in cases of documented MRSA bacteremia where it could be extended to 21 days based upon investigator's discretion. Vancomycin intravenous infusion every 12 hours (twice daily) at a dose of 15 mg/kg/dose over a period of at minimum 60 minutes for 7 to 14 days except in cases of documented MRSA bacteremia where it could be extended to 21 days based upon investigator's discretion. Total of all reporting groups
Overall Participants 537 515 1052
Age (Years) [Mean (Standard Deviation) ]
Mean (Standard Deviation) [Years]
49.7
(17.6)
49.4
(17.2)
49.5
(17.4)
Sex: Female, Male (Count of Participants)
Female
232
43.2%
200
38.8%
432
41.1%
Male
305
56.8%
315
61.2%
620
58.9%

Outcome Measures

1. Primary Outcome
Title Clinical Outcome in Participants With Baseline Methicillin-Resistant Staphylococcus Aureus (MRSA) at End of Study (EOS) for Per-Protocol (PP) Population
Description Clinical response (CR) was based primarily on global assessment of clinical presentation of participant made by investigator at evaluation time point. At EOS, CR was evaluated as "success" (cure: resolution of clinical signs or (/) symptoms of infection when compared to baseline); "failure": persistence/progression of baseline signs/symptoms of infection after at least 2 days of treatment/development of new clinical findings consistent with active infection; "unknown": extenuating circumstances precluding classification to 1 of above. "Unknown" was excluded from present analysis.
Time Frame EOS (6 to 28 days after the last dose of study drug)

Outcome Measure Data

Analysis Population Description
PP (EOS)set:who received at least 1 dose of drug, with appropriate diagnosis,MRSA as pathogen,satisfied all key inclusion/exclusion criteria, adequate dosing(failure:2 full days of drug, success:4 full days), observed outcome at EOS unless declared failure prior to visit."N"(number of participants analyzed)=participants evaluable for the measure.
Arm/Group Title Linezolid Vancomycin
Arm/Group Description Linezolid intravenous infusion or oral tablets every 12 hours (twice daily) at a dose of 600 mg. Intravenous infusion was administered over a period of 60-90 minutes. Duration of study treatment was 7 to 14 days except in cases of documented MRSA bacteremia where it could be extended to 21 days based upon investigator's discretion. Vancomycin intravenous infusion every 12 hours (twice daily) at a dose of 15 mg/kg/dose over a period of at minimum 60 minutes for 7 to 14 days except in cases of documented MRSA bacteremia where it could be extended to 21 days based upon investigator's discretion.
Measure Participants 227 209
Success
84.1
15.7%
79.9
15.5%
Failure
15.9
3%
20.1
3.9%
Statistical Analysis 1
Statistical Analysis Overview Comparison Group Selection Linezolid, Vancomycin
Comments The percent difference was calculated by percentage of participants cured in linezolid arm minus the percentage of participants cured in vancomycin arm along with 2-sided 95 percent (%) confidence interval (CI).
Type of Statistical Test Non-Inferiority or Equivalence
Comments Linezolid was claimed non-inferior to vancomycin if the lower limit of 95% CI for the difference in cure rate is greater than the Food and Drug Administration (FDA) suggested boundary of delta= -0.10.
Statistical Test of Hypothesis p-Value 0.249
Comments
Method Chi-squared
Comments
Method of Estimation Estimation Parameter Percent Difference
Estimated Value 4.2
Confidence Interval (2-Sided) 95%
-3.0 to 11.5
Parameter Dispersion Type:
Value:
Estimation Comments
2. Secondary Outcome
Title Clinical Outcome in Participants With Baseline MRSA at End of Treatment (EOT) for PP Population
Description CR evaluated at EOT visit as "success" (cure: resolution of clinical sign/symptoms of infection when compared with baseline; and improvement: 2/more improvement in clinical sign/symptoms of infection when compared with baseline); "failure": persistence/progression of baseline signs/symptoms of infection after at least 2 days of treatment/development of new clinical findings consistent with active infection; "unknown": extenuating circumstances precluding classification to 1 of above. "Unknown": excluded from present analysis.
Time Frame EOT (within 72 hours of last dose of study drug)

Outcome Measure Data

Analysis Population Description
PP (EOT)set:who received at least 1 dose of drug,with appropriate diagnosis,MRSA as pathogen,satisfied all key inclusion/exclusion criteria,adequate dosing(failure:2 full days of drug,success:4 full days),observed outcome at EOT visit unless declared failure prior to visit."N"(number of participants analyzed)=participants evaluable for the measure.
Arm/Group Title Linezolid Vancomycin
Arm/Group Description Linezolid intravenous infusion or oral tablets every 12 hours (twice daily) at a dose of 600 mg. Intravenous infusion was administered over a period of 60-90 minutes. Duration of study treatment was 7 to 14 days except in cases of documented MRSA bacteremia where it could be extended to 21 days based upon investigator's discretion. Vancomycin intravenous infusion every 12 hours (twice daily) at a dose of 15 mg/kg/dose over a period of at minimum 60 minutes for 7 to 14 days except in cases of documented MRSA bacteremia where it could be extended to 21 days based upon investigator's discretion.
Measure Participants 239 220
Success
91.6
17.1%
87.7
17%
Failure
8.4
1.6%
12.3
2.4%
Statistical Analysis 1
Statistical Analysis Overview Comparison Group Selection Linezolid, Vancomycin
Comments The percent difference was calculated by percentage of participants cured in linezolid arm minus the percentage of participants cured in vancomycin arm along with 2-sided 95% CI.
Type of Statistical Test Non-Inferiority or Equivalence
Comments Linezolid was claimed non-inferior to vancomycin if the lower limit of 95% CI for the difference in cure rate is greater than the FDA suggested boundary of delta= -0.10.
Statistical Test of Hypothesis p-Value 0.168
Comments
Method Chi-squared
Comments
Method of Estimation Estimation Parameter Percent Difference
Estimated Value 3.9
Confidence Interval (2-Sided) 95%
-1.7 to 9.5
Parameter Dispersion Type:
Value:
Estimation Comments
3. Secondary Outcome
Title Clinical Outcome in Participants With Baseline MRSA at EOS for Modified-Intent to Treat (mITT) Population
Description CR was based primarily on global assessment of clinical presentation of participant made by investigator at evaluation time point. At EOS, CR was evaluated as "success" (cure: resolution of clinical signs/symptoms of infection when compared to baseline); "failure": persistence/progression of baseline signs/symptoms of infection after at least 2 days of treatment/development of new clinical findings consistent with active infection; "unknown": extenuating circumstances precluding classification to 1 of above. "Unknown" was excluded from present analysis.
Time Frame EOS (6 to 28 days after the last dose of study drug)

Outcome Measure Data

Analysis Population Description
mITT population included participants who received at least 1 dose of drug with appropriate diagnosis and MRSA as pathogen."N"(number of participants analyzed)= participants evaluable for the measure.
Arm/Group Title Linezolid Vancomycin
Arm/Group Description Linezolid intravenous infusion or oral tablets every 12 hours (twice daily) at a dose of 600 mg. Intravenous infusion was administered over a period of 60-90 minutes. Duration of study treatment was 7 to 14 days except in cases of documented MRSA bacteremia where it could be extended to 21 days based upon investigator's discretion. Vancomycin intravenous infusion every 12 hours (twice daily) at a dose of 15 mg/kg/dose over a period of at minimum 60 minutes for 7 to 14 days except in cases of documented MRSA bacteremia where it could be extended to 21 days based upon investigator's discretion.
Measure Participants 276 266
Success
80.8
15%
73.7
14.3%
Failure
19.2
3.6%
26.3
5.1%
Statistical Analysis 1
Statistical Analysis Overview Comparison Group Selection Linezolid, Vancomycin
Comments The percent difference was calculated by percentage of participants cured in linezolid arm minus the percentage of participants cured in vancomycin arm along with 2-sided 95% CI.
Type of Statistical Test Non-Inferiority or Equivalence
Comments Linezolid was claimed non-inferior to vancomycin if the lower limit of 95% CI for the difference in cure rate is greater than the FDA suggested boundary of delta= -0.10.
Statistical Test of Hypothesis p-Value 0.048
Comments
Method Chi-squared
Comments
Method of Estimation Estimation Parameter Percent Difference
Estimated Value 7.1
Confidence Interval (2-Sided) 95%
0.1 to 14.2
Parameter Dispersion Type:
Value:
Estimation Comments
4. Secondary Outcome
Title Clinical Outcome in Participants With Baseline MRSA at EOT for mITT Population
Description CR evaluated at EOT visit as "success" (cure: resolution of clinical sign/symptoms of infection when compared with baseline; and improvement: 2/more improvement in clinical sign/symptoms of infection when compared with baseline); "failure": persistence/progression of baseline signs/symptoms of infection after at least 2 days of treatment/development of new clinical findings consistent with active infection; "unknown": extenuating circumstances precluding classification to 1 of above. "Unknown": excluded from present analysis.
Time Frame EOT (within 72 hours of last dose of study drug)

Outcome Measure Data

Analysis Population Description
mITT population included participants who received at least 1 dose of drug with appropriate diagnosis and MRSA as pathogen."N"(number of participants analyzed)= participants evaluable for the measure.
Arm/Group Title Linezolid Vancomycin
Arm/Group Description Linezolid intravenous infusion or oral tablets every 12 hours (twice daily) at a dose of 600 mg. Intravenous infusion was administered over a period of 60-90 minutes. Duration of study treatment was 7 to 14 days except in cases of documented MRSA bacteremia where it could be extended to 21 days based upon investigator's discretion. Vancomycin intravenous infusion every 12 hours (twice daily) at a dose of 15 mg/kg/dose over a period of at minimum 60 minutes for 7 to 14 days except in cases of documented MRSA bacteremia where it could be extended to 21 days based upon investigator's discretion.
Measure Participants 284 287
Success
89.4
16.6%
84.7
16.4%
Failure
10.6
2%
15.3
3%
Statistical Analysis 1
Statistical Analysis Overview Comparison Group Selection Linezolid, Vancomycin
Comments The percent difference was calculated by percentage of participants cured in linezolid arm minus the percentage of participants cured in vancomycin arm along with 2-sided 95% CI.
Type of Statistical Test Non-Inferiority or Equivalence
Comments Linezolid was claimed non-inferior to vancomycin if the lower limit of 95% CI for the difference in cure rate is greater than the FDA suggested boundary of delta= -0.10.
Statistical Test of Hypothesis p-Value 0.090
Comments
Method Chi-squared
Comments
Method of Estimation Estimation Parameter Percent Difference
Estimated Value 4.8
Confidence Interval (2-Sided) 95%
-0.7 to 10.3
Parameter Dispersion Type:
Value:
Estimation Comments
5. Secondary Outcome
Title Microbiological Outcome in Participants With Baseline MRSA at EOS for PP Population
Description Microbiological outcome dichotomized to "success" (eradication: absence of baseline isolate (BI) in culture of original infection site (IS); presumed eradication: participant cured and no specimen available for culture; superinfection: clinically failed or improved with new pathogen identified from primary IS other than BI; colonization: isolate was present but not producing infection) and "failure" (persistence: BI present in original IS; presumed persistence: clinically failed and no specimen available for culture; recurrence: presence of isolate at EOS, that was eradicated at EOT).
Time Frame EOS (6 to 28 days after the last dose of study drug)

Outcome Measure Data

Analysis Population Description
PP (EOS)set:who received at least 1 dose of drug, with appropriate diagnosis,MRSA as pathogen,satisfied all key inclusion/exclusion criteria, adequate dosing(failure:2 full days of drug, success:4 full days), observed outcome at EOS unless declared failure prior to visit."N"(number of participants analyzed)=participants evaluable for the measure.
Arm/Group Title Linezolid Vancomycin
Arm/Group Description Linezolid intravenous infusion or oral tablets every 12 hours (twice daily) at a dose of 600 mg. Intravenous infusion was administered over a period of 60-90 minutes. Duration of study treatment was 7 to 14 days except in cases of documented MRSA bacteremia where it could be extended to 21 days based upon investigator's discretion. Vancomycin intravenous infusion every 12 hours (twice daily) at a dose of 15 mg/kg/dose over a period of at minimum 60 minutes for 7 to 14 days except in cases of documented MRSA bacteremia where it could be extended to 21 days based upon investigator's discretion.
Measure Participants 228 209
Success
75.0
14%
68.4
13.3%
Failure
25.0
4.7%
31.6
6.1%
Statistical Analysis 1
Statistical Analysis Overview Comparison Group Selection Linezolid, Vancomycin
Comments The percent difference was calculated by percentage of participants cured in linezolid arm minus the percentage of participants cured in vancomycin arm along with 2-sided 95% CI.
Type of Statistical Test Non-Inferiority or Equivalence
Comments Linezolid was claimed non-inferior to vancomycin if the lower limit of 95% CI for the difference in cure rate is greater than the FDA suggested boundary of delta= -0.10.
Statistical Test of Hypothesis p-Value 0.127
Comments
Method Chi-squared
Comments
Method of Estimation Estimation Parameter Percent Difference
Estimated Value 6.6
Confidence Interval (2-Sided) 95%
-1.9 to 15.0
Parameter Dispersion Type:
Value:
Estimation Comments
6. Secondary Outcome
Title Microbiological Outcome in Participants With Baseline MRSA at EOT for PP Population
Description Microbiological outcome dichotomized to "success" (eradication: absence of baseline isolate (BI) in culture of original infection site (IS); presumed eradication: participant cured and no specimen available for culture; superinfection: clinically failed or improved with new pathogen identified from primary IS other than BI; colonization: isolate was present but not producing infection) and "failure" (persistence: BI present in original IS; presumed persistence: clinically failed and no specimen available for culture).
Time Frame EOT (within 72 hours of last dose of study drug)

Outcome Measure Data

Analysis Population Description
PP (EOT)set:who received at least 1 dose of drug,with appropriate diagnosis,MRSA as pathogen,satisfied all key inclusion/exclusion criteria,adequate dosing(failure:2 full days of drug,success:4 full days),observed outcome at EOT visit unless declared failure prior to visit."N"(number of participants analyzed)=participants evaluable for the measure.
Arm/Group Title Linezolid Vancomycin
Arm/Group Description Linezolid intravenous infusion or oral tablets every 12 hours (twice daily) at a dose of 600 mg. Intravenous infusion was administered over a period of 60-90 minutes. Duration of study treatment was 7 to 14 days except in cases of documented MRSA bacteremia where it could be extended to 21 days based upon investigator's discretion. Vancomycin intravenous infusion every 12 hours (twice daily) at a dose of 15 mg/kg/dose over a period of at minimum 60 minutes for 7 to 14 days except in cases of documented MRSA bacteremia where it could be extended to 21 days based upon investigator's discretion.
Measure Participants 239 221
Success
85.4
15.9%
68.8
13.4%
Failure
14.6
2.7%
31.2
6.1%
Statistical Analysis 1
Statistical Analysis Overview Comparison Group Selection Linezolid, Vancomycin
Comments The percent difference was calculated by percentage of participants cured in linezolid arm minus the percentage of participants cured in vancomycin arm along with 2-sided 95% CI.
Type of Statistical Test Non-Inferiority or Equivalence
Comments Linezolid was claimed non-inferior to vancomycin if the lower limit of 95% CI for the difference in cure rate is greater than the FDA suggested boundary of delta= -0.10.
Statistical Test of Hypothesis p-Value 0.000
Comments
Method Chi-squared
Comments
Method of Estimation Estimation Parameter Percent Difference
Estimated Value 16.6
Confidence Interval (2-Sided) 95%
9.0 to 24.2
Parameter Dispersion Type:
Value:
Estimation Comments
7. Secondary Outcome
Title Microbiological Outcome in Participants With Baseline MRSA at EOS for mITT Population
Description Microbiological outcome dichotomized to "success" (eradication: absence of baseline isolate (BI) in culture of original infection site (IS); presumed eradication: participant cured and no specimen available for culture; superinfection: clinically failed or improved with new pathogen identified from primary IS other than BI; colonization: isolate was present but not producing infection) and "failure" (persistence: BI present in original IS; presumed persistence: clinically failed and no specimen available for culture; recurrence: presence of isolate at EOS, that was eradicated at EOT).
Time Frame EOS (6 to 28 days after the last dose of study drug)

Outcome Measure Data

Analysis Population Description
mITT population included participants who received at least 1 dose of drug with appropriate diagnosis and MRSA as pathogen."N"(number of participants analyzed)= participants evaluable for the measure.
Arm/Group Title Linezolid Vancomycin
Arm/Group Description Linezolid intravenous infusion or oral tablets every 12 hours (twice daily) at a dose of 600 mg. Intravenous infusion was administered over a period of 60-90 minutes. Duration of study treatment was 7 to 14 days except in cases of documented MRSA bacteremia where it could be extended to 21 days based upon investigator's discretion. Vancomycin intravenous infusion every 12 hours (twice daily) at a dose of 15 mg/kg/dose over a period of at minimum 60 minutes for 7 to 14 days except in cases of documented MRSA bacteremia where it could be extended to 21 days based upon investigator's discretion.
Measure Participants 279 266
Success
73.5
13.7%
65.8
12.8%
Failure
26.5
4.9%
34.2
6.6%
Statistical Analysis 1
Statistical Analysis Overview Comparison Group Selection Linezolid, Vancomycin
Comments The percent difference was calculated by percentage of participants cured in linezolid arm minus the percentage of participants cured in vancomycin arm along with 2-sided 95% CI.
Type of Statistical Test Non-Inferiority or Equivalence
Comments Linezolid was claimed non-inferior to vancomycin if the lower limit of 95% CI for the difference in cure rate is greater than the FDA suggested boundary of delta= -0.10.
Statistical Test of Hypothesis p-Value 0.051
Comments
Method Chi-squared
Comments
Method of Estimation Estimation Parameter Percent Difference
Estimated Value 7.7
Confidence Interval (2-Sided) 95%
-0.0 to 15.4
Parameter Dispersion Type:
Value:
Estimation Comments
8. Secondary Outcome
Title Microbiological Outcome in Participants With Baseline MRSA at EOT for mITT Population
Description Microbiological outcome dichotomized to "success" (eradication: absence of baseline isolate (BI) in culture of original infection site (IS); presumed eradication: participant cured and no specimen available for culture; superinfection: clinically failed or improved with new pathogen identified from primary IS other than BI; colonization: isolate was present but not producing infection) and "failure" (persistence: BI present in original IS; presumed persistence: clinically failed and no specimen available for culture).
Time Frame EOT (within 72 hours of last dose of study drug)

Outcome Measure Data

Analysis Population Description
mITT population included participants who received at least 1 dose of drug with appropriate diagnosis and MRSA as pathogen."N"(number of participants analyzed)= participants evaluable for the measure.
Arm/Group Title Linezolid Vancomycin
Arm/Group Description Linezolid intravenous infusion or oral tablets every 12 hours (twice daily) at a dose of 600 mg. Intravenous infusion was administered over a period of 60-90 minutes. Duration of study treatment was 7 to 14 days except in cases of documented MRSA bacteremia where it could be extended to 21 days based upon investigator's discretion. Vancomycin intravenous infusion every 12 hours (twice daily) at a dose of 15 mg/kg/dose over a period of at minimum 60 minutes for 7 to 14 days except in cases of documented MRSA bacteremia where it could be extended to 21 days based upon investigator's discretion.
Measure Participants 285 289
Success
84.2
15.7%
69.2
13.4%
Failure
15.8
2.9%
30.8
6%
Statistical Analysis 1
Statistical Analysis Overview Comparison Group Selection Linezolid, Vancomycin
Comments The percent difference was calculated by percentage of participants cured in linezolid arm minus the percentage of participants cured in vancomycin arm along with 2-sided 95% CI.
Type of Statistical Test Non-Inferiority or Equivalence
Comments Linezolid was claimed non-inferior to vancomycin if the lower limit of 95% CI for the difference in cure rate is greater than the FDA suggested boundary of delta= -0.10.
Statistical Test of Hypothesis p-Value 0.000
Comments
Method Chi-squared
Comments
Method of Estimation Estimation Parameter Percent Difference
Estimated Value 15.0
Confidence Interval (2-Sided) 95%
8.2 to 21.8
Parameter Dispersion Type:
Value:
Estimation Comments
9. Secondary Outcome
Title Number of Participants With Clinical Signs and Symptoms at EOT and EOS for PP Population
Description Participant's clinical evaluation of signs and symptoms were based on global assessment by investigator at specific timepoints. Signs and symptoms of an active skin or soft tissue infection caused by suspected MRSA included purulent discharge, nonpurulent discharge, erythema, swelling, induration, tenderness, pain and local skin warmth. It was recorded by the sponsor using wound parameter score ranging from 0 to 3; "0= none, 1= mild, 2= moderate and 3= severe".
Time Frame EOT (within 72 hours of last dose of study drug), EOS (6 to 28 days after the last dose of study drug)

Outcome Measure Data

Analysis Population Description
PP set:who received at least 1 dose of drug, with appropriate diagnosis,MRSA as pathogen, satisfied all key inclusion/exclusion criteria, adequate dosing(failure:2 full days of drug, success:4 full days),observed outcome at EOS visit unless declared failure prior to the visit.Here,'n'=participants evaluable for specific clinical signs and symptoms.
Arm/Group Title Linezolid Vancomycin
Arm/Group Description Linezolid intravenous infusion or oral tablets every 12 hours (twice daily) at a dose of 600 mg. Intravenous infusion was administered over a period of 60-90 minutes. Duration of study treatment was 7 to 14 days except in cases of documented MRSA bacteremia where it could be extended to 21 days based upon investigator's discretion. Vancomycin intravenous infusion every 12 hours (twice daily) at a dose of 15 mg/kg/dose over a period of at minimum 60 minutes for 7 to 14 days except in cases of documented MRSA bacteremia where it could be extended to 21 days based upon investigator's discretion.
Measure Participants 229 210
Purulent discharge (mild) (EOT) (n=222, 206)
21
3.9%
17
3.3%
Purulent discharge (moderate) (EOT) (n=222, 206)
1
0.2%
5
1%
Purulent discharge (severe) (EOT) (n=222, 206)
0
0%
3
0.6%
Non-purulent discharge (mild) (EOT) (n=222, 206)
54
10.1%
57
11.1%
Non-purulent discharge (moderate) (EOT)(n=222,206)
3
0.6%
5
1%
Non-purulent discharge (severe) (EOT) (n=222, 206)
0
0%
0
0%
Erythema (mild) (EOT) (n=222, 206)
53
9.9%
62
12%
Erythema (moderate) (EOT) (n=222, 206)
1
0.2%
4
0.8%
Erythema (severe) (EOT) (n=222, 206)
0
0%
1
0.2%
Swelling (mild) (EOT) (n=222, 205)
39
7.3%
44
8.5%
Swelling (moderate) (EOT) (n=222, 205)
4
0.7%
6
1.2%
Swelling (severe) (EOT) (n=222, 205)
1
0.2%
1
0.2%
Induration (mild) (EOT) (n=222, 206)
57
10.6%
67
13%
Induration (moderate) (EOT) (n=222, 206)
3
0.6%
3
0.6%
Induration (severe) (EOT) (n=222, 206)
0
0%
0
0%
Tenderness (mild) (EOT) (n=222, 206)
62
11.5%
52
10.1%
Tenderness (moderate) (EOT) (n=222, 206)
4
0.7%
15
2.9%
Tenderness (severe) (EOT) (n=222, 206)
0
0%
2
0.4%
Pain (mild) (EOT) (n=222, 206)
38
7.1%
43
8.3%
Pain (moderate) (EOT) (n=222, 206)
4
0.7%
15
2.9%
Pain (severe) (EOT) (n=222, 206)
0
0%
2
0.4%
Local skin warmth (mild) (EOT) (n=222, 205)
14
2.6%
19
3.7%
Local skin warmth (moderate) (EOT) (n=222, 205)
0
0%
1
0.2%
Local skin warmth (severe) (EOT) (n=222, 205)
0
0%
0
0%
Purulent discharge (mild) (EOS) (n=228, 209)
10
1.9%
21
4.1%
Purulent discharge (moderate) (EOS) (n=228, 209)
2
0.4%
4
0.8%
Purulent discharge (severe) (EOS) (n=228, 209)
1
0.2%
0
0%
Non-purulent discharge (mild) (EOS) (n=227, 209)
35
6.5%
43
8.3%
Non-purulent discharge (moderate) (EOS)(n=227,209)
3
0.6%
2
0.4%
Non-purulent discharge (severe) (EOS) (n=227, 209)
0
0%
0
0%
Erythema (mild) (EOS) (n=228, 209)
25
4.7%
31
6%
Erythema (moderate) (EOS) (n=228, 209)
4
0.7%
6
1.2%
Erythema (severe) (EOS) (n=228, 209)
0
0%
0
0%
Swelling (mild) (EOS) (n=227, 208)
23
4.3%
25
4.9%
Swelling (moderate) (EOS) (n=227, 208)
0
0%
4
0.8%
Swelling (severe) (EOS) (n=227, 208)
1
0.2%
0
0%
Induration (mild) (EOS) (n=227, 209)
28
5.2%
37
7.2%
Induration (moderate) (EOS) (n=227, 209)
1
0.2%
1
0.2%
Induration (severe) (EOS) (n=227, 209)
0
0%
0
0%
Tenderness (mild) (EOS) (n=227, 209)
29
5.4%
32
6.2%
Tenderness (moderate) (EOS) (n=227, 209)
5
0.9%
4
0.8%
Tenderness (severe) (EOS) (n=227, 209)
0
0%
0
0%
Pain (mild) (EOS) (n=227, 209)
32
6%
27
5.2%
Pain (moderate) (EOS) (n=227, 209)
5
0.9%
4
0.8%
Pain (severe) (EOS) (n=227, 209)
0
0%
0
0%
Local skin warmth (mild) (EOS) (n=227, 208)
11
2%
15
2.9%
Local skin warmth (moderate) (EOS) (n=227, 208)
0
0%
2
0.4%
Local skin warmth (severe) (EOS) (n=227, 208)
0
0%
0
0%
10. Secondary Outcome
Title Number of Participants With Clinical Signs and Symptoms at EOT and EOS for mITT Population
Description Participant's clinical evaluation of signs and symptoms were based on global assessment by investigator at specific timepoints. Signs and symptoms of an active skin or soft tissue infection caused by suspected MRSA included purulent discharge, nonpurulent discharge, erythema, swelling, induration, tenderness, pain and local skin warmth. It was recorded using wound parameter score ranging from 0 to 3; "0= none, 1= mild, 2= moderate and 3= severe".
Time Frame EOT (within 72 hours of last dose of study drug), EOS (6 to 28 days after the last dose of study drug)

Outcome Measure Data

Analysis Population Description
mITT population included participants who received at least 1 dose of drug with appropriate diagnosis caused by MRSA. Here, 'n' signified participants who were evaluable and analyzed for specific clinical signs and symptoms.
Arm/Group Title Linezolid Vancomycin
Arm/Group Description Linezolid intravenous infusion or oral tablets every 12 hours (twice daily) at a dose of 600 mg. Intravenous infusion was administered over a period of 60-90 minutes. Duration of study treatment was 7 to 14 days except in cases of documented MRSA bacteremia where it could be extended to 21 days based upon investigator's discretion. Vancomycin intravenous infusion every 12 hours (twice daily) at a dose of 15 mg/kg/dose over a period of at minimum 60 minutes for 7 to 14 days except in cases of documented MRSA bacteremia where it could be extended to 21 days based upon investigator's discretion.
Measure Participants 322 318
Purulent discharge (mild) (EOT) (n=286, 292)
27
25
Purulent discharge (moderate) (EOT) (n=286, 292)
3
9
Purulent discharge (severe) (EOT) (n=286, 292)
0
3
Non-purulent discharge (mild) (EOT) (n=286, 292)
71
93
Non-purulent discharge (moderate) (EOT)(n=286,292)
5
6
Non-purulent discharge (severe) (EOT) (n=286, 292)
0
0
Erythema (mild) (EOT) (n=286, 292)
72
88
Erythema (moderate) (EOT) (n=286, 292)
3
10
Erythema (severe) (EOT) (n=286, 292)
1
1
Swelling (mild) (EOT) (n=286, 291)
54
82
Swelling (moderate) (EOT) (n=286, 291)
7
9
Swelling (severe) (EOT) (n=286, 291)
1
1
Induration (mild) (EOT) (n=286, 292)
73
89
Induration (moderate) (EOT) (n=286, 292)
6
6
Induration (severe) (EOT) (n=286, 292)
0
0
Tenderness (mild) (EOT) (n=286, 292)
77
85
Tenderness (moderate) (EOT) (n=286, 292)
9
22
Tenderness (severe) (EOT) (n=286, 292)
1
2
Pain (mild) (EOT) (n=286, 292)
55
194
Pain (moderate) (EOT) (n=286, 292)
10
20
Pain (severe) (EOT) (n=286, 292)
0
3
Local skin warmth (mild) (EOT) (n=286, 290)
20
38
Local skin warmth (moderate) (EOT) (n=286, 290)
2
3
Local skin warmth (severe) (EOT) (n=286, 290)
0
0
Purulent discharge (mild) (EOS) (n=286, 270)
13
28
Purulent discharge (moderate) (EOS) (n=286, 270)
4
7
Purulent discharge (severe) (EOS) (n=286, 270)
1
1
Non-purulent discharge (mild) (EOS) (n=285, 270)
46
56
Non-purulent discharge (moderate) (EOS)(n=285,270)
5
4
Non-purulent discharge (severe) (EOS) (n=285, 270)
0
0
Erythema (mild) (EOS) (n=286, 270)
40
45
Erythema (moderate) (EOS) (n=286, 270)
6
12
Erythema (severe) (EOS) (n=286, 270)
0
0
Swelling (mild) (EOS) (n=285, 269)
33
36
Swelling (moderate) (EOS) (n=285, 269)
2
11
Swelling (severe) (EOS) (n=285, 269)
1
1
Induration (mild) (EOS) (n=285, 270)
37
44
Induration (moderate) (EOS) (n=285, 270)
2
6
Induration (severe) (EOS) (n=285, 270)
0
1
Tenderness (mild) (EOS) (n=284, 270)
49
46
Tenderness (moderate) (EOS) (n=284, 270)
6
7
Tenderness (severe) (EOS) (n=284, 270)
0
2
Pain (mild) (EOS) (n=285, 270)
49
40
Pain (moderate) (EOS) (n=285, 270)
7
7
Pain (severe) (EOS) (n=285, 270)
0
3
Local skin warmth (mild) (EOS) (n=285, 269)
20
27
Local skin warmth (moderate) (EOS) (n=285, 269)
0
4
Local skin warmth (severe) (EOS) (n=285, 269)
0
1
11. Secondary Outcome
Title Duration of Hospital Stay for PP Population
Description Duration of Hospital Stay was defined as the number of days the participant was cared as an inpatient in the hospital during the maximum 34 days of the study period. The number of days in the hospital was counted from start of study medication to date of discharge or last date known to be in the hospital (for missing discharge dates and participants who died) or Day 34 for participants who continued hospitalization beyond EOS period.
Time Frame Baseline up to EOS (6 to 28 days after the last dose of study drug)

Outcome Measure Data

Analysis Population Description
PP set:who received at least 1 dose of drug,with appropriate diagnosis,MRSA as pathogen,satisfied all key inclusion/exclusion criteria, adequate dosing(failure:2 full days of drug, success:4 full days), observed outcome at EOS visit unless declared failure prior to visit.
Arm/Group Title Linezolid Vancomycin
Arm/Group Description Linezolid intravenous infusion or oral tablets every 12 hours (twice daily) at a dose of 600 mg. Intravenous infusion was administered over a period of 60-90 minutes. Duration of study treatment was 7 to 14 days except in cases of documented MRSA bacteremia where it could be extended to 21 days based upon investigator's discretion. Vancomycin intravenous infusion every 12 hours (twice daily) at a dose of 15 mg/kg/dose over a period of at minimum 60 minutes for 7 to 14 days except in cases of documented MRSA bacteremia where it could be extended to 21 days based upon investigator's discretion.
Measure Participants 229 210
Mean (Standard Error) [Days]
7.6
(0.44)
8.9
(0.48)
Statistical Analysis 1
Statistical Analysis Overview Comparison Group Selection Linezolid, Vancomycin
Comments Null hypothesis was that there was no difference in the length of hospital stay between the treatment groups.
Type of Statistical Test Superiority or Other
Comments
Statistical Test of Hypothesis p-Value 0.022
Comments Alpha = 0.05 was the level of significance if the null hypothesis was rejected.
Method Wilcoxon (Mann-Whitney)
Comments
12. Secondary Outcome
Title Duration of Hospital Stay for mITT Population
Description Duration of Hospital Stay was defined as the number of days the participant was cared as an inpatient in the hospital during the maximum 34 days of the study period. The number of days in the hospital was counted from start of study medication to date of discharge or last date known to be in the hospital (for missing discharge dates and participants who died) or Day 34 for participants who continued hospitalization beyond EOS period.
Time Frame Baseline up to EOS (6 to 28 days after the last dose of study drug)

Outcome Measure Data

Analysis Population Description
mITT population included participants who received at least 1 dose of drug with appropriate diagnosis and MRSA as pathogen.
Arm/Group Title Linezolid Vancomycin
Arm/Group Description Linezolid intravenous infusion or oral tablets every 12 hours (twice daily) at a dose of 600 mg. Intravenous infusion was administered over a period of 60-90 minutes. Duration of study treatment was 7 to 14 days except in cases of documented MRSA bacteremia where it could be extended to 21 days based upon investigator's discretion. Vancomycin intravenous infusion every 12 hours (twice daily) at a dose of 15 mg/kg/dose over a period of at minimum 60 minutes for 7 to 14 days except in cases of documented MRSA bacteremia where it could be extended to 21 days based upon investigator's discretion.
Measure Participants 322 318
Mean (Standard Error) [Days]
7.7
(0.39)
8.9
(0.40)
Statistical Analysis 1
Statistical Analysis Overview Comparison Group Selection Linezolid, Vancomycin
Comments Null hypothesis was that there was no difference in the length of hospital stay between the treatment groups.
Type of Statistical Test Superiority or Other
Comments
Statistical Test of Hypothesis p-Value 0.016
Comments Alpha = 0.05 was the level of significance if the null hypothesis was rejected.
Method Wilcoxon (Mann-Whitney)
Comments
13. Secondary Outcome
Title Duration of Intravenous Therapy for PP Population
Description Duration of intravenous antibiotic treatment was measured as the number of days intravenous doses of study medication was administered, before and after discharge.
Time Frame Baseline up to EOS (6 to 28 days after the last dose of study drug)

Outcome Measure Data

Analysis Population Description
PP set:who received at least 1 dose of drug,with appropriate diagnosis,MRSA as pathogen,satisfied all key inclusion/exclusion criteria, adequate dosing(failure:2 full days of drug, success:4 full days), observed outcome at EOS visit unless declared failure prior to visit."N"(number of participants analyzed) = participants evaluable for the measure.
Arm/Group Title Linezolid Vancomycin
Arm/Group Description Linezolid intravenous infusion or oral tablets every 12 hours (twice daily) at a dose of 600 mg. Intravenous infusion was administered over a period of 60-90 minutes. Duration of study treatment was 7 to 14 days except in cases of documented MRSA bacteremia where it could be extended to 21 days based upon investigator's discretion. Vancomycin intravenous infusion every 12 hours (twice daily) at a dose of 15 mg/kg/dose over a period of at minimum 60 minutes for 7 to 14 days except in cases of documented MRSA bacteremia where it could be extended to 21 days based upon investigator's discretion.
Measure Participants 136 210
Mean (Standard Error) [Days]
5.6
(0.35)
10.4
(0.22)
Statistical Analysis 1
Statistical Analysis Overview Comparison Group Selection Linezolid, Vancomycin
Comments
Type of Statistical Test Superiority or Other
Comments
Statistical Test of Hypothesis p-Value 0.000
Comments
Method t-test, 2 sided
Comments
14. Secondary Outcome
Title Duration of Intravenous Therapy for mITT Population
Description Duration of intravenous antibiotic treatment was measured as the number of days intravenous doses of study medication was administered, before and after discharge.
Time Frame Baseline up to EOS (6 to 28 days after the last dose of study drug)

Outcome Measure Data

Analysis Population Description
mITT population included participants who received at least 1 dose of drug with appropriate diagnosis caused by MRSA. "N"(number of participants analyzed)=participants evaluable for the measure.
Arm/Group Title Linezolid Vancomycin
Arm/Group Description Linezolid intravenous infusion or oral tablets every 12 hours (twice daily) at a dose of 600 mg. Intravenous infusion was administered over a period of 60-90 minutes. Duration of study treatment was 7 to 14 days except in cases of documented MRSA bacteremia where it could be extended to 21 days based upon investigator's discretion. Vancomycin intravenous infusion every 12 hours (twice daily) at a dose of 15 mg/kg/dose over a period of at minimum 60 minutes for 7 to 14 days except in cases of documented MRSA bacteremia where it could be extended to 21 days based upon investigator's discretion.
Measure Participants 188 318
Mean (Standard Error) [Days]
5.3
(0.28)
9.8
(0.22)
Statistical Analysis 1
Statistical Analysis Overview Comparison Group Selection Linezolid, Vancomycin
Comments
Type of Statistical Test Superiority or Other
Comments
Statistical Test of Hypothesis p-Value 0.000
Comments
Method t-test, 2 sided
Comments
15. Secondary Outcome
Title Number of Participants Using Medical Resources
Description Medical resources utilization included a daily log of the participants' location in the hospital and outside of the hospital (non-hospital location), adjusted duration of stay (difference between duration of stay and the duration of discharge delay) and daily log of study drug dosing.
Time Frame Baseline up to EOS (6 to 28 days after the last dose of study drug)

Outcome Measure Data

Analysis Population Description
Data was not analyzed for the primary reporting.
Arm/Group Title Linezolid Vancomycin
Arm/Group Description Linezolid intravenous infusion or oral tablets every 12 hours (twice daily) at a dose of 600 mg. Intravenous infusion was administered over a period of 60-90 minutes. Duration of study treatment was 7 to 14 days except in cases of documented MRSA bacteremia where it could be extended to 21 days based upon investigator's discretion. Vancomycin intravenous infusion every 12 hours (twice daily) at a dose of 15 mg/kg/dose over a period of at minimum 60 minutes for 7 to 14 days except in cases of documented MRSA bacteremia where it could be extended to 21 days based upon investigator's discretion.
Measure Participants 0 0

Adverse Events

Time Frame
Adverse Event Reporting Description The same event may appear as both an AE and a SAE. However, what is presented are distinct events. An event may be categorized as serious in one subject and as nonserious in another subject, or one subject may have experienced both a serious and nonserious event during the study.
Arm/Group Title Linezolid Vancomycin
Arm/Group Description Linezolid intravenous infusion or oral tablets every 12 hours (twice daily) at a dose of 600 mg. Intravenous infusion was administered over a period of 60-90 minutes. Duration of study treatment was 7 to 14 days except in cases of documented MRSA bacteremia where it could be extended to 21 days based upon investigator's discretion. Vancomycin intravenous infusion every 12 hours (twice daily) at a dose of 15 mg/kg/dose over a period of at minimum 60 minutes for 7 to 14 days except in cases of documented MRSA bacteremia where it could be extended to 21 days based upon investigator's discretion.
All Cause Mortality
Linezolid Vancomycin
Affected / at Risk (%) # Events Affected / at Risk (%) # Events
Total / (NaN) / (NaN)
Serious Adverse Events
Linezolid Vancomycin
Affected / at Risk (%) # Events Affected / at Risk (%) # Events
Total 31/537 (5.8%) 32/515 (6.2%)
Blood and lymphatic system disorders
Anaemia 1/537 (0.2%) 0/515 (0%)
Thrombocytopenia 0/537 (0%) 1/515 (0.2%)
Cardiac disorders
Acute myocardial infarction 2/537 (0.4%) 0/515 (0%)
Angina pectoris 0/537 (0%) 1/515 (0.2%)
Cardiac arrest 1/537 (0.2%) 1/515 (0.2%)
Cardiac failure 2/537 (0.4%) 0/515 (0%)
Cardio-respiratory arrest 1/537 (0.2%) 0/515 (0%)
Myocardial infarction 1/537 (0.2%) 0/515 (0%)
Gastrointestinal disorders
Diabetic gastroparesis 1/537 (0.2%) 0/515 (0%)
Diarrhoea 1/537 (0.2%) 0/515 (0%)
Haematochezia 0/537 (0%) 1/515 (0.2%)
Intestinal ischaemia 0/537 (0%) 1/515 (0.2%)
Nausea 2/537 (0.4%) 0/515 (0%)
Pancreatitis chronic 0/537 (0%) 1/515 (0.2%)
Vomiting 1/537 (0.2%) 0/515 (0%)
General disorders
Brain death 1/537 (0.2%) 0/515 (0%)
Fatigue 1/537 (0.2%) 0/515 (0%)
Necrosis 1/537 (0.2%) 0/515 (0%)
Pyrexia 1/537 (0.2%) 0/515 (0%)
Hepatobiliary disorders
Bile duct obstruction 1/537 (0.2%) 0/515 (0%)
Infections and infestations
Abscess limb 0/537 (0%) 3/515 (0.6%)
Abscess neck 1/537 (0.2%) 0/515 (0%)
Bacterial infection 0/537 (0%) 1/515 (0.2%)
Burn infection 0/537 (0%) 1/515 (0.2%)
Cellulitis 0/537 (0%) 1/515 (0.2%)
Cellulitis gangrenous 0/537 (0%) 1/515 (0.2%)
Clostridium difficile colitis 1/537 (0.2%) 0/515 (0%)
Cystitis 0/537 (0%) 1/515 (0.2%)
Diabetic foot infection 1/537 (0.2%) 0/515 (0%)
Erysipelas 1/537 (0.2%) 0/515 (0%)
Extradural abscess 1/537 (0.2%) 0/515 (0%)
Intestinal gangrene 0/537 (0%) 1/515 (0.2%)
Mediastinitis 0/537 (0%) 1/515 (0.2%)
Osteomyelitis 1/537 (0.2%) 1/515 (0.2%)
Pneumonia 1/537 (0.2%) 2/515 (0.4%)
Postoperative wound infection 1/537 (0.2%) 2/515 (0.4%)
Sepsis 2/537 (0.4%) 1/515 (0.2%)
Septic shock 1/537 (0.2%) 0/515 (0%)
Skin infection 1/537 (0.2%) 0/515 (0%)
Subcutaneous abscess 1/537 (0.2%) 0/515 (0%)
Injury, poisoning and procedural complications
Post procedural complication 1/537 (0.2%) 0/515 (0%)
Postoperative wound complication 1/537 (0.2%) 0/515 (0%)
Wound complication 1/537 (0.2%) 0/515 (0%)
Investigations
Blood creatine increased 0/537 (0%) 1/515 (0.2%)
Blood culture positive 1/537 (0.2%) 1/515 (0.2%)
Body temperature increased 1/537 (0.2%) 0/515 (0%)
Haematocrit decreased 0/537 (0%) 1/515 (0.2%)
White blood cell count increased 0/537 (0%) 1/515 (0.2%)
Metabolism and nutrition disorders
Hyperglycaemia 0/537 (0%) 1/515 (0.2%)
Musculoskeletal and connective tissue disorders
Back pain 1/537 (0.2%) 1/515 (0.2%)
Bone disorder 1/537 (0.2%) 0/515 (0%)
Osteitis 1/537 (0.2%) 0/515 (0%)
Pain in extremity 0/537 (0%) 1/515 (0.2%)
Neoplasms benign, malignant and unspecified (incl cysts and polyps)
Squamous cell carcinoma of skin 0/537 (0%) 1/515 (0.2%)
Nervous system disorders
Brain injury 1/537 (0.2%) 0/515 (0%)
Headache 1/537 (0.2%) 0/515 (0%)
Psychiatric disorders
Major depression 1/537 (0.2%) 0/515 (0%)
Mental disorder 1/537 (0.2%) 0/515 (0%)
Renal and urinary disorders
Renal failure 1/537 (0.2%) 0/515 (0%)
Renal failure acute 0/537 (0%) 1/515 (0.2%)
Renal failure chronic 0/537 (0%) 1/515 (0.2%)
Renal impairment 0/537 (0%) 1/515 (0.2%)
Respiratory, thoracic and mediastinal disorders
Atelectasis 0/537 (0%) 1/515 (0.2%)
Dyspnoea 3/537 (0.6%) 1/515 (0.2%)
Respiratory arrest 1/537 (0.2%) 0/515 (0%)
Skin and subcutaneous tissue disorders
Diabetic ulcer 0/537 (0%) 1/515 (0.2%)
Pruritus 0/537 (0%) 1/515 (0.2%)
Rash erythematous 0/537 (0%) 1/515 (0.2%)
Rash generalised 0/537 (0%) 1/515 (0.2%)
Red man syndrome 0/537 (0%) 2/515 (0.4%)
Urticaria 0/537 (0%) 1/515 (0.2%)
Surgical and medical procedures
Thrombectomy 0/537 (0%) 1/515 (0.2%)
Toe amputation 0/537 (0%) 1/515 (0.2%)
Vascular disorders
Aortic thrombosis 0/537 (0%) 1/515 (0.2%)
Arterial rupture 1/537 (0.2%) 0/515 (0%)
Peripheral arterial occlusive disease 0/537 (0%) 1/515 (0.2%)
Other (Not Including Serious) Adverse Events
Linezolid Vancomycin
Affected / at Risk (%) # Events Affected / at Risk (%) # Events
Total 250/537 (46.6%) 250/515 (48.5%)
Blood and lymphatic system disorders
Anaemia 10/537 (1.9%) 10/515 (1.9%)
Eosinophilia 0/537 (0%) 3/515 (0.6%)
Haemorrhagic anaemia 1/537 (0.2%) 0/515 (0%)
Hypothrombinaemia 0/537 (0%) 1/515 (0.2%)
Lymphadenopathy 0/537 (0%) 1/515 (0.2%)
Neutropenia 0/537 (0%) 1/515 (0.2%)
Pancytopenia 1/537 (0.2%) 0/515 (0%)
Thrombocytopenia 2/537 (0.4%) 5/515 (1%)
Thrombocytosis 2/537 (0.4%) 0/515 (0%)
Cardiac disorders
Angina pectoris 3/537 (0.6%) 2/515 (0.4%)
Bradycardia 0/537 (0%) 1/515 (0.2%)
Cardiac failure congestive 1/537 (0.2%) 1/515 (0.2%)
Cardiomegaly 0/537 (0%) 1/515 (0.2%)
Left ventricular dysfunction 0/537 (0%) 1/515 (0.2%)
Mitral valve incompetence 1/537 (0.2%) 0/515 (0%)
Myocardial infarction 1/537 (0.2%) 0/515 (0%)
Palpitations 1/537 (0.2%) 0/515 (0%)
Sinus tachycardia 1/537 (0.2%) 0/515 (0%)
Tachyarrhythmia 0/537 (0%) 1/515 (0.2%)
Tachycardia 1/537 (0.2%) 2/515 (0.4%)
Tricuspid valve incompetence 1/537 (0.2%) 0/515 (0%)
Congenital, familial and genetic disorders
Factor XII deficiency 1/537 (0.2%) 0/515 (0%)
Ear and labyrinth disorders
Motion sickness 0/537 (0%) 1/515 (0.2%)
Tinnitus 1/537 (0.2%) 0/515 (0%)
Vertigo 1/537 (0.2%) 0/515 (0%)
Eye disorders
Conjunctivitis 1/537 (0.2%) 1/515 (0.2%)
Glaucoma 1/537 (0.2%) 0/515 (0%)
Ocular hyperaemia 0/537 (0%) 1/515 (0.2%)
Vision blurred 0/537 (0%) 2/515 (0.4%)
Gastrointestinal disorders
Abdominal discomfort 1/537 (0.2%) 1/515 (0.2%)
Abdominal distension 0/537 (0%) 2/515 (0.4%)
Abdominal pain 2/537 (0.4%) 4/515 (0.8%)
Abdominal pain upper 1/537 (0.2%) 1/515 (0.2%)
Anorectal discomfort 1/537 (0.2%) 0/515 (0%)
Ascites 1/537 (0.2%) 0/515 (0%)
Constipation 15/537 (2.8%) 17/515 (3.3%)
Diarrhoea 39/537 (7.3%) 14/515 (2.7%)
Dry mouth 6/537 (1.1%) 0/515 (0%)
Dyspepsia 7/537 (1.3%) 7/515 (1.4%)
Dysphagia 1/537 (0.2%) 0/515 (0%)
Erosive oesophagitis 0/537 (0%) 1/515 (0.2%)
Faecal incontinence 0/537 (0%) 1/515 (0.2%)
Faecalith 0/537 (0%) 1/515 (0.2%)
Flatulence 1/537 (0.2%) 1/515 (0.2%)
Food poisoning 1/537 (0.2%) 0/515 (0%)
Gastric haemorrhage 0/537 (0%) 1/515 (0.2%)
Gastric ulcer haemorrhage 0/537 (0%) 1/515 (0.2%)
Gastritis 3/537 (0.6%) 0/515 (0%)
Gastrooesophageal reflux disease 3/537 (0.6%) 0/515 (0%)
Glossodynia 1/537 (0.2%) 0/515 (0%)
Haematemesis 1/537 (0.2%) 0/515 (0%)
Haematochezia 0/537 (0%) 1/515 (0.2%)
Haemorrhoidal haemorrhage 0/537 (0%) 1/515 (0.2%)
Haemorrhoids 1/537 (0.2%) 0/515 (0%)
Hyperchlorhydria 1/537 (0.2%) 0/515 (0%)
Ileal fistula 0/537 (0%) 1/515 (0.2%)
Intestinal prolapse 1/537 (0.2%) 0/515 (0%)
Lip dry 1/537 (0.2%) 0/515 (0%)
Lip swelling 1/537 (0.2%) 1/515 (0.2%)
Nausea 55/537 (10.2%) 29/515 (5.6%)
Rectal haemorrhage 0/537 (0%) 1/515 (0.2%)
Tongue discolouration 1/537 (0.2%) 0/515 (0%)
Tongue ulceration 0/537 (0%) 1/515 (0.2%)
Vomiting 23/537 (4.3%) 11/515 (2.1%)
General disorders
Application site pruritus 0/537 (0%) 1/515 (0.2%)
Asthenia 3/537 (0.6%) 0/515 (0%)
Catheter site haematoma 0/537 (0%) 1/515 (0.2%)
Catheter site haemorrhage 0/537 (0%) 1/515 (0.2%)
Catheter site oedema 0/537 (0%) 1/515 (0.2%)
Catheter site pain 0/537 (0%) 4/515 (0.8%)
Chest discomfort 1/537 (0.2%) 0/515 (0%)
Chest pain 2/537 (0.4%) 3/515 (0.6%)
Chills 1/537 (0.2%) 1/515 (0.2%)
Cyst 0/537 (0%) 1/515 (0.2%)
Discomfort 1/537 (0.2%) 0/515 (0%)
Disease progression 0/537 (0%) 2/515 (0.4%)
Fatigue 7/537 (1.3%) 1/515 (0.2%)
Generalised oedema 1/537 (0.2%) 1/515 (0.2%)
Hyperthermia 0/537 (0%) 1/515 (0.2%)
Inflammation 0/537 (0%) 1/515 (0.2%)
Influenza like illness 1/537 (0.2%) 0/515 (0%)
Infusion site erythema 1/537 (0.2%) 3/515 (0.6%)
Infusion site extravasation 1/537 (0.2%) 14/515 (2.7%)
Infusion site oedema 1/537 (0.2%) 0/515 (0%)
Infusion site pain 1/537 (0.2%) 5/515 (1%)
Infusion site phlebitis 3/537 (0.6%) 4/515 (0.8%)
Infusion site pruritus 0/537 (0%) 1/515 (0.2%)
Infusion site rash 0/537 (0%) 1/515 (0.2%)
Infusion site reaction 0/537 (0%) 1/515 (0.2%)
Infusion site swelling 1/537 (0.2%) 1/515 (0.2%)
Infusion site thrombosis 0/537 (0%) 1/515 (0.2%)
Infusion site warmth 0/537 (0%) 1/515 (0.2%)
Injection site haematoma 1/537 (0.2%) 0/515 (0%)
Injection site pruritus 1/537 (0.2%) 0/515 (0%)
Malaise 1/537 (0.2%) 0/515 (0%)
Nodule 1/537 (0.2%) 0/515 (0%)
Oedema peripheral 6/537 (1.1%) 2/515 (0.4%)
Pain 2/537 (0.4%) 2/515 (0.4%)
Pyrexia 6/537 (1.1%) 11/515 (2.1%)
Sensation of foreign body 1/537 (0.2%) 0/515 (0%)
Ulcer 2/537 (0.4%) 0/515 (0%)
Hepatobiliary disorders
Cholecystitis 1/537 (0.2%) 0/515 (0%)
Hepatic function abnormal 0/537 (0%) 1/515 (0.2%)
Hepatitis 1/537 (0.2%) 0/515 (0%)
Hyperbilirubinaemia 0/537 (0%) 1/515 (0.2%)
Immune system disorders
Drug hypersensitivity 1/537 (0.2%) 1/515 (0.2%)
Hypersensitivity 0/537 (0%) 1/515 (0.2%)
Infections and infestations
Abdominal abscess 0/537 (0%) 1/515 (0.2%)
Abscess 1/537 (0.2%) 1/515 (0.2%)
Abscess limb 1/537 (0.2%) 2/515 (0.4%)
Abscess neck 1/537 (0.2%) 0/515 (0%)
Acarodermatitis 0/537 (0%) 1/515 (0.2%)
Asymptomatic bacteriuria 1/537 (0.2%) 0/515 (0%)
Bacteraemia 1/537 (0.2%) 0/515 (0%)
Bacterial rhinitis 0/537 (0%) 1/515 (0.2%)
Bronchitis 2/537 (0.4%) 0/515 (0%)
Candidiasis 5/537 (0.9%) 1/515 (0.2%)
Clostridium difficile colitis 0/537 (0%) 1/515 (0.2%)
Device related infection 2/537 (0.4%) 1/515 (0.2%)
Ear infection 0/537 (0%) 1/515 (0.2%)
Enterobacter infection 1/537 (0.2%) 1/515 (0.2%)
Enterococcal infection 1/537 (0.2%) 1/515 (0.2%)
Escherichia infection 1/537 (0.2%) 0/515 (0%)
Escherichia sepsis 1/537 (0.2%) 0/515 (0%)
Fungal infection 4/537 (0.7%) 2/515 (0.4%)
Fungal skin infection 4/537 (0.7%) 2/515 (0.4%)
Furuncle 1/537 (0.2%) 0/515 (0%)
Gangrene 0/537 (0%) 1/515 (0.2%)
Gastroenteritis 0/537 (0%) 2/515 (0.4%)
Genital candidiasis 2/537 (0.4%) 0/515 (0%)
Haematoma infection 1/537 (0.2%) 0/515 (0%)
Hepatitis C 0/537 (0%) 1/515 (0.2%)
Herpes simplex 0/537 (0%) 1/515 (0.2%)
Herpes zoster 0/537 (0%) 1/515 (0.2%)
Infected skin ulcer 1/537 (0.2%) 0/515 (0%)
Infection 1/537 (0.2%) 1/515 (0.2%)
Infusion site abscess 0/537 (0%) 1/515 (0.2%)
Infusion site cellulitis 1/537 (0.2%) 0/515 (0%)
Injection site abscess 0/537 (0%) 1/515 (0.2%)
Lower respiratory tract infection 1/537 (0.2%) 0/515 (0%)
Morganella infection 0/537 (0%) 1/515 (0.2%)
Nasopharyngitis 2/537 (0.4%) 0/515 (0%)
Oral candidiasis 2/537 (0.4%) 2/515 (0.4%)
Oral fungal infection 2/537 (0.4%) 0/515 (0%)
Osteomyelitis 1/537 (0.2%) 3/515 (0.6%)
Pelvic abscess 1/537 (0.2%) 0/515 (0%)
Pneumonia 2/537 (0.4%) 1/515 (0.2%)
Postoperative wound infection 1/537 (0.2%) 1/515 (0.2%)
Prostate infection 1/537 (0.2%) 0/515 (0%)
Pseudomonas infection 0/537 (0%) 2/515 (0.4%)
Pyelonephritis 1/537 (0.2%) 0/515 (0%)
Sepsis 1/537 (0.2%) 0/515 (0%)
Skin candida 2/537 (0.4%) 1/515 (0.2%)
Skin infection 2/537 (0.4%) 1/515 (0.2%)
Staphylococcal abscess 0/537 (0%) 1/515 (0.2%)
Subcutaneous abscess 0/537 (0%) 1/515 (0.2%)
Tinea cruris 2/537 (0.4%) 0/515 (0%)
Tonsillitis bacterial 1/537 (0.2%) 0/515 (0%)
Tooth abscess 0/537 (0%) 1/515 (0.2%)
Trichomoniasis 1/537 (0.2%) 0/515 (0%)
Upper respiratory tract infection 1/537 (0.2%) 1/515 (0.2%)
Urinary tract infection 13/537 (2.4%) 7/515 (1.4%)
Urinary tract infection bacterial 1/537 (0.2%) 0/515 (0%)
Urinary tract infection fungal 1/537 (0.2%) 1/515 (0.2%)
Viral infection 0/537 (0%) 1/515 (0.2%)
Viral upper respiratory tract infection 1/537 (0.2%) 1/515 (0.2%)
Vulvovaginal candidiasis 1/537 (0.2%) 1/515 (0.2%)
Vulvovaginal mycotic infection 7/537 (1.3%) 2/515 (0.4%)
Vulvovaginitis trichomonal 1/537 (0.2%) 0/515 (0%)
Wound infection 0/537 (0%) 1/515 (0.2%)
Wound infection fungal 1/537 (0.2%) 0/515 (0%)
Wound infection staphylococcal 1/537 (0.2%) 0/515 (0%)
Injury, poisoning and procedural complications
Anaemia postoperative 1/537 (0.2%) 2/515 (0.4%)
Chest injury 0/537 (0%) 1/515 (0.2%)
Contusion 1/537 (0.2%) 2/515 (0.4%)
Fall 0/537 (0%) 2/515 (0.4%)
Foot fracture 1/537 (0.2%) 0/515 (0%)
Foreign body in eye 1/537 (0.2%) 0/515 (0%)
Gastrointestinal stoma complication 0/537 (0%) 1/515 (0.2%)
Incision site pain 0/537 (0%) 1/515 (0.2%)
Infusion related reaction 0/537 (0%) 1/515 (0.2%)
Post procedural complication 1/537 (0.2%) 0/515 (0%)
Post procedural haemorrhage 1/537 (0.2%) 1/515 (0.2%)
Postoperative wound complication 0/537 (0%) 1/515 (0.2%)
Procedural nausea 2/537 (0.4%) 1/515 (0.2%)
Procedural pain 2/537 (0.4%) 2/515 (0.4%)
Seroma 1/537 (0.2%) 0/515 (0%)
Skeletal injury 0/537 (0%) 1/515 (0.2%)
Transfusion reaction 1/537 (0.2%) 0/515 (0%)
Wound dehiscence 1/537 (0.2%) 0/515 (0%)
Wound haemorrhage 1/537 (0.2%) 1/515 (0.2%)
Wound necrosis 2/537 (0.4%) 0/515 (0%)
Investigations
Alanine aminotransferase increased 5/537 (0.9%) 4/515 (0.8%)
Aspartate aminotransferase increased 2/537 (0.4%) 4/515 (0.8%)
Blood albumin decreased 0/537 (0%) 1/515 (0.2%)
Blood alkaline phosphatase increased 1/537 (0.2%) 0/515 (0%)
Blood amylase increased 2/537 (0.4%) 2/515 (0.4%)
Blood calcium decreased 1/537 (0.2%) 0/515 (0%)
Blood chloride decreased 0/537 (0%) 1/515 (0.2%)
Blood creatinine increased 0/537 (0%) 4/515 (0.8%)
Blood culture positive 1/537 (0.2%) 0/515 (0%)
Blood glucose increased 4/537 (0.7%) 1/515 (0.2%)
Blood lactate dehydrogenase increased 1/537 (0.2%) 1/515 (0.2%)
Blood magnesium decreased 1/537 (0.2%) 1/515 (0.2%)
Blood phosphorus decreased 0/537 (0%) 2/515 (0.4%)
Blood potassium decreased 1/537 (0.2%) 1/515 (0.2%)
Blood pressure decreased 1/537 (0.2%) 0/515 (0%)
Blood pressure increased 1/537 (0.2%) 1/515 (0.2%)
Blood pressure systolic increased 0/537 (0%) 1/515 (0.2%)
Body temperature increased 2/537 (0.4%) 0/515 (0%)
C-reactive protein increased 1/537 (0.2%) 2/515 (0.4%)
Culture wound positive 0/537 (0%) 1/515 (0.2%)
Drug level above therapeutic 0/537 (0%) 1/515 (0.2%)
Haematocrit decreased 1/537 (0.2%) 0/515 (0%)
Haemoglobin decreased 1/537 (0.2%) 1/515 (0.2%)
Hepatic enzyme increased 1/537 (0.2%) 2/515 (0.4%)
International normalised ratio increased 0/537 (0%) 1/515 (0.2%)
Liver function test abnormal 2/537 (0.4%) 1/515 (0.2%)
Neutrophil count decreased 1/537 (0.2%) 0/515 (0%)
Oxygen saturation decreased 1/537 (0.2%) 0/515 (0%)
Platelet count decreased 2/537 (0.4%) 0/515 (0%)
Platelet count increased 3/537 (0.6%) 0/515 (0%)
Polymerase chain reaction 1/537 (0.2%) 0/515 (0%)
Red blood cell count decreased 1/537 (0.2%) 0/515 (0%)
Urine output decreased 1/537 (0.2%) 0/515 (0%)
Weight increased 0/537 (0%) 1/515 (0.2%)
White blood cell count decreased 1/537 (0.2%) 0/515 (0%)
White blood cell count increased 0/537 (0%) 1/515 (0.2%)
Metabolism and nutrition disorders
Decreased appetite 3/537 (0.6%) 3/515 (0.6%)
Diabetes mellitus 0/537 (0%) 1/515 (0.2%)
Diabetes mellitus inadequate control 1/537 (0.2%) 1/515 (0.2%)
Hyperglycaemia 1/537 (0.2%) 2/515 (0.4%)
Hyperkalaemia 3/537 (0.6%) 2/515 (0.4%)
Hypoalbuminaemia 2/537 (0.4%) 1/515 (0.2%)
Hypocalcaemia 1/537 (0.2%) 0/515 (0%)
Hypoglycaemia 2/537 (0.4%) 7/515 (1.4%)
Hypokalaemia 9/537 (1.7%) 4/515 (0.8%)
Hypomagnesaemia 1/537 (0.2%) 0/515 (0%)
Hyponatraemia 3/537 (0.6%) 1/515 (0.2%)
Hypoproteinaemia 1/537 (0.2%) 0/515 (0%)
Malnutrition 1/537 (0.2%) 2/515 (0.4%)
Metabolic acidosis 1/537 (0.2%) 0/515 (0%)
Musculoskeletal and connective tissue disorders
Arthralgia 0/537 (0%) 2/515 (0.4%)
Back pain 3/537 (0.6%) 5/515 (1%)
Coccydynia 1/537 (0.2%) 0/515 (0%)
Fibromyalgia 1/537 (0.2%) 0/515 (0%)
Flank pain 1/537 (0.2%) 0/515 (0%)
Joint swelling 1/537 (0.2%) 0/515 (0%)
Muscle spasms 2/537 (0.4%) 3/515 (0.6%)
Muscular weakness 1/537 (0.2%) 0/515 (0%)
Musculoskeletal chest pain 2/537 (0.4%) 0/515 (0%)
Musculoskeletal pain 1/537 (0.2%) 1/515 (0.2%)
Myalgia 1/537 (0.2%) 0/515 (0%)
Osteoarthritis 1/537 (0.2%) 0/515 (0%)
Osteoporosis 0/537 (0%) 1/515 (0.2%)
Pain in extremity 1/537 (0.2%) 3/515 (0.6%)
Pain in jaw 1/537 (0.2%) 0/515 (0%)
Tenosynovitis 0/537 (0%) 1/515 (0.2%)
Nervous system disorders
Aphasia 0/537 (0%) 1/515 (0.2%)
Convulsion 2/537 (0.4%) 1/515 (0.2%)
Dizziness 10/537 (1.9%) 10/515 (1.9%)
Dysgeusia 3/537 (0.6%) 1/515 (0.2%)
Essential tremor 0/537 (0%) 1/515 (0.2%)
Headache 15/537 (2.8%) 19/515 (3.7%)
Hemiparesis 1/537 (0.2%) 0/515 (0%)
Hypoaesthesia 1/537 (0.2%) 0/515 (0%)
Lethargy 1/537 (0.2%) 2/515 (0.4%)
Migraine 1/537 (0.2%) 2/515 (0.4%)
Neurological decompensation 0/537 (0%) 1/515 (0.2%)
Neuropathy peripheral 0/537 (0%) 1/515 (0.2%)
Paraesthesia 2/537 (0.4%) 2/515 (0.4%)
Post polio syndrome 0/537 (0%) 1/515 (0.2%)
Presyncope 0/537 (0%) 1/515 (0.2%)
Psychomotor hyperactivity 1/537 (0.2%) 0/515 (0%)
Sedation 1/537 (0.2%) 0/515 (0%)
Somnolence 1/537 (0.2%) 5/515 (1%)
Tremor 1/537 (0.2%) 0/515 (0%)
VIIth nerve paralysis 0/537 (0%) 1/515 (0.2%)
Psychiatric disorders
Agitation 0/537 (0%) 1/515 (0.2%)
Anxiety 5/537 (0.9%) 6/515 (1.2%)
Confusional state 0/537 (0%) 2/515 (0.4%)
Depression 2/537 (0.4%) 1/515 (0.2%)
Disorientation 0/537 (0%) 1/515 (0.2%)
Hallucination 1/537 (0.2%) 0/515 (0%)
Insomnia 15/537 (2.8%) 16/515 (3.1%)
Restlessness 1/537 (0.2%) 0/515 (0%)
Sleep disorder 2/537 (0.4%) 2/515 (0.4%)
Renal and urinary disorders
Bladder spasm 0/537 (0%) 1/515 (0.2%)
Dysuria 1/537 (0.2%) 0/515 (0%)
Haematuria 3/537 (0.6%) 2/515 (0.4%)
Hydronephrosis 0/537 (0%) 1/515 (0.2%)
Leukocyturia 0/537 (0%) 1/515 (0.2%)
Oliguria 1/537 (0.2%) 1/515 (0.2%)
Renal failure 0/537 (0%) 3/515 (0.6%)
Renal impairment 3/537 (0.6%) 3/515 (0.6%)
Urinary hesitation 1/537 (0.2%) 0/515 (0%)
Urinary incontinence 1/537 (0.2%) 1/515 (0.2%)
Urinary retention 0/537 (0%) 3/515 (0.6%)
Urine odour abnormal 1/537 (0.2%) 0/515 (0%)
Reproductive system and breast disorders
Genital rash 1/537 (0.2%) 0/515 (0%)
Menorrhagia 1/537 (0.2%) 0/515 (0%)
Menstruation irregular 1/537 (0.2%) 0/515 (0%)
Ovarian cyst 1/537 (0.2%) 0/515 (0%)
Pruritus genital 1/537 (0.2%) 1/515 (0.2%)
Scrotal irritation 0/537 (0%) 1/515 (0.2%)
Vaginal disorder 1/537 (0.2%) 0/515 (0%)
Vaginal haemorrhage 0/537 (0%) 1/515 (0.2%)
Vulval disorder 1/537 (0.2%) 0/515 (0%)
Vulvovaginal pruritus 1/537 (0.2%) 1/515 (0.2%)
Respiratory, thoracic and mediastinal disorders
Bronchial obstruction 2/537 (0.4%) 0/515 (0%)
Cough 6/537 (1.1%) 3/515 (0.6%)
Dyspnoea 3/537 (0.6%) 3/515 (0.6%)
Epistaxis 2/537 (0.4%) 2/515 (0.4%)
Hyperventilation 1/537 (0.2%) 0/515 (0%)
Hypoxia 1/537 (0.2%) 0/515 (0%)
Nasal congestion 2/537 (0.4%) 1/515 (0.2%)
Oropharyngeal blistering 1/537 (0.2%) 0/515 (0%)
Oropharyngeal pain 5/537 (0.9%) 2/515 (0.4%)
Pleural effusion 2/537 (0.4%) 0/515 (0%)
Pulmonary hypertension 1/537 (0.2%) 0/515 (0%)
Pulmonary oedema 1/537 (0.2%) 0/515 (0%)
Rales 0/537 (0%) 1/515 (0.2%)
Respiratory disorder 1/537 (0.2%) 1/515 (0.2%)
Wheezing 1/537 (0.2%) 3/515 (0.6%)
Skin and subcutaneous tissue disorders
Blood blister 1/537 (0.2%) 0/515 (0%)
Cold sweat 1/537 (0.2%) 0/515 (0%)
Decubitus ulcer 1/537 (0.2%) 2/515 (0.4%)
Dermatitis 0/537 (0%) 1/515 (0.2%)
Dermatitis contact 0/537 (0%) 1/515 (0.2%)
Drug eruption 2/537 (0.4%) 1/515 (0.2%)
Dry skin 0/537 (0%) 1/515 (0.2%)
Erythema 2/537 (0.4%) 4/515 (0.8%)
Erythema nodosum 1/537 (0.2%) 0/515 (0%)
Hyperhidrosis 1/537 (0.2%) 1/515 (0.2%)
Night sweats 0/537 (0%) 1/515 (0.2%)
Pruritus 9/537 (1.7%) 21/515 (4.1%)
Pruritus allergic 3/537 (0.6%) 1/515 (0.2%)
Pruritus generalised 0/537 (0%) 2/515 (0.4%)
Rash 10/537 (1.9%) 9/515 (1.7%)
Rash erythematous 0/537 (0%) 1/515 (0.2%)
Rash maculo-papular 1/537 (0.2%) 0/515 (0%)
Rash pruritic 0/537 (0%) 1/515 (0.2%)
Red man syndrome 0/537 (0%) 5/515 (1%)
Rosacea 1/537 (0.2%) 0/515 (0%)
Skin irritation 2/537 (0.4%) 2/515 (0.4%)
Skin reaction 0/537 (0%) 1/515 (0.2%)
Stasis dermatitis 1/537 (0.2%) 0/515 (0%)
Urticaria 0/537 (0%) 1/515 (0.2%)
Surgical and medical procedures
Venipuncture 1/537 (0.2%) 0/515 (0%)
Vascular disorders
Deep vein thrombosis 1/537 (0.2%) 1/515 (0.2%)
Flushing 0/537 (0%) 1/515 (0.2%)
Haematoma 0/537 (0%) 1/515 (0.2%)
Hot flush 0/537 (0%) 1/515 (0.2%)
Hypertension 7/537 (1.3%) 5/515 (1%)
Hypertensive crisis 0/537 (0%) 2/515 (0.4%)
Hypotension 3/537 (0.6%) 2/515 (0.4%)
Lymphoedema 1/537 (0.2%) 0/515 (0%)
Peripheral vascular disorder 1/537 (0.2%) 0/515 (0%)
Phlebitis 1/537 (0.2%) 0/515 (0%)
Shock haemorrhagic 1/537 (0.2%) 0/515 (0%)

Limitations/Caveats

Comparing duration of intravenous (IV) therapy for linezolid (LZD) and vancomycin (VAN) in study, participants in LZD group had option to switch to oral therapy while those in VAN group had to remain on IV therapy until completion of study treatment.

More Information

Certain Agreements

Principal Investigators are NOT employed by the organization sponsoring the study.

Pfizer has the right to review disclosures, requesting a delay of less than 60 days. Investigator will postpone single center publications until after disclosure of pooled data (all sites), less than 12 months from study completion/termination at all participating sites. Investigator may not disclose previously undisclosed confidential information other than study results.

Results Point of Contact

Name/Title Pfizer ClinicalTrials.gov Call Center
Organization Pfizer, Inc.
Phone 1-800-718-1021
Email ClinicalTrials.gov_Inquiries@pfizer.com
Responsible Party:
Pfizer
ClinicalTrials.gov Identifier:
NCT00087490
Other Study ID Numbers:
  • A5951002
First Posted:
Jul 13, 2004
Last Update Posted:
Aug 8, 2012
Last Verified:
Jun 1, 2012