TOMUS-Trial Of Mid-Urethral Slings

Sponsor
HealthCore-NERI (Other)
Overall Status
Completed
CT.gov ID
NCT00325039
Collaborator
(none)
597
11
2
86
54.3
0.6

Study Details

Study Description

Brief Summary

The primary aim of this clinical trial is to compare treatment success for two minimally invasive surgical procedures to treat stress urinary incontinence in women. These procedures are called mid-urethral slings. The secondary aims of the trial are to compare other outcomes for the two surgical procedures, including quality of life, sexual function, satisfaction with treatment outcomes, complications, and the need for other treatments(s) after surgery. Follow-up will be a minimum of two years.

Condition or Disease Intervention/Treatment Phase
  • Procedure: retropubic mid-urethral sling (TVT)
  • Procedure: transobturator mid-urethral sling (TVT-O and the Monarc)
Phase 4

Study Design

Study Type:
Interventional
Actual Enrollment :
597 participants
Allocation:
Randomized
Intervention Model:
Parallel Assignment
Masking:
None (Open Label)
Primary Purpose:
Treatment
Official Title:
TOMUS-Trial Of Mid-Urethral Slings
Study Start Date :
Apr 1, 2006
Actual Primary Completion Date :
Jun 1, 2010
Actual Study Completion Date :
Jun 1, 2013

Arms and Interventions

Arm Intervention/Treatment
Active Comparator: 1

retropubic mid-urethral sling (TVT) The specific TVT used was the Tension-free Vaginal Tape (Gynecare)

Procedure: retropubic mid-urethral sling (TVT)
This trial is a comparison of two types of mid-urethral slings. The retropubic mid-urethral mesh sling is used for treatment of stress incontinence; this procedure was less invasive than the fascial sling procedures that were reference standards at the start of the study. Specifically, a synthetic tape is passed transvaginally at the midurethral level through the retropubic space.

Active Comparator: 2

transobturator mid-urethral sling (TVT-O and the Monarc) Two transobturator slings were used: the Tension-free Vaginal Tape Obturator (Gynecare), which is placed starting inside the vagina and coming out through the obturator foramen ("in-to-out") or the Monarc (American Medical System), which is placed starting in the groin area, passing through the obturator foramen, and then into the vagina ("out-to-in").

Procedure: transobturator mid-urethral sling (TVT-O and the Monarc)
This trial is a comparison of two types of mid-urethral slings. The transobturator mid-urethral sling is used for treatment of stress incontinence; this procedure was developed to minimize the potential for bladder and bowel injuries associated with the retropubic sling, since the sling is passed through the obturator canal, avoiding the pelvic organs in the retropubic space.

Outcome Measures

Primary Outcome Measures

  1. Objective Treatment Success at 12 Months [12 months]

    Objective treatment success: negative stress test, negative pad test, and no retreatment for stress urinary incontinence (SUI) including behavioral, pharmacologic or surgical procedures A provocative stress test standardized to volume and position is performed for direct observation of urine leakage. Observed urine loss from the urethra coincidental with the Valsalva maneuver or cough is a positive test; a negative test indicates no urine loss. Pad testing quantifies the amount of urine involuntarily lost and is used to reflect everyday incontinence; it is negative if loss is <15g/24 hrs.

  2. Subjective Treatment Success at 12 Months [12 months]

    Absence of self-reported symptoms of stress-type urinary incontinence, as assessed with the use of the Medical, Epidemiological and Social Aspects of Aging (MESA) questionnaire (responded never to all 9 MESA questions), no leakage recorded in a 3-day voiding diary and no retreatment for stress incontinence including behavioral, pharmacologic or surgical treatment.

Secondary Outcome Measures

  1. Patient Satisfaction at 12 Months [Follow-Up]

    Patient satisfaction was assessed at the 12 month visit with the questions, "how satisfied or dissatisfied are you with the result of bladder surgery related to urine leakage?" Possible responses were completely satisfied, mostly satisfied, neutral, mostly dissatisfied, and completely dissatisfied. Completely and mostly satisfied were reported as "satisfied" and neutral, most dissatisfied and completely dissatisfied as "not satisfied".

  2. Change in Quality of Life From Baseline to 12 Months [Baseline - 12 months]

    Scores on the Incontinence Impact Questionnaire range from 0 to 400 with higher scores indicating greater impact. The scores are changes from baseline to the 12 month visit (baseline - 12 months).

  3. Bother as Measured by the Urogenital Distress Inventory (UDI) at 12 Months [12 months]

    Urogenital Distress Inventory (UDI) scores range from 0 to 300 with higher scores indicating greater distress. Scores are changes from baseline to the 12 month visit (baseline - 12 months)

Eligibility Criteria

Criteria

Ages Eligible for Study:
21 Years and Older
Sexes Eligible for Study:
Female
Accepts Healthy Volunteers:
Yes
Inclusion Criteria:
  • Female

  • Stress urinary incontinence (SUI) as evidenced by all of the following:

  • Self-reported stress-type urinary incontinence symptoms, of duration ≥ 3 months

  • Medical, Epidemiological and Social Aspects of Aging (MESA) stress symptom score (percent of total possible stress score) greater than MESA urge symptom score (percent of total possible urge score)

  • Observation of leakage by provocative stress test at a bladder volume ≤ 300ml

  • Bladder capacity ≥ 200ml by stress test

  • Post-void residual (PVR) ≤ 100cc with pelvic organ prolapse (POP) Stage I or lower. If POP is Stage II-IV, PVR >100cc but ≤ 500cc is allowed

  • Eligible for both retropubic and transobturator procedures

  • No medical contraindications, e.g., current urinary tract infection (UTI), history of pelvic irradiation, history of lower urinary tract cancer

  • American Society of Anesthesiologists (ASA) class I, II, or III

  • No current intermittent catheterization

  • Available for 24-months of follow-up and able to complete study assessments, per clinician judgment

  • Signed consent form

Exclusion Criteria:
  • Age <21 years

  • Non-ambulatory (ambulatory with assistive devices does not exclude the patient)

  • Pregnancy by self-report or positive pregnancy test, or self-reported intention to ever become pregnant

  • Current chemotherapy or current or history of pelvic radiation therapy

  • Systemic disease known to affect bladder function (i.e., Parkinson's disease, multiple sclerosis, spina bifida, spinal cord injury or trauma)

  • Urethral diverticulum, current or previous (i.e. repaired)

  • Prior augmentation cystoplasty or artificial sphincter

  • Implanted nerve stimulators for urinary symptoms

  • History of synthetic sling for stress urinary incontinence

  • <12 months post-partum

  • Laparoscopic or open pelvic surgery <3 months*

  • Current evaluation or treatment for chronic pelvic pain (painful bladder syndrome)

  • Participation in another treatment intervention trial that might influence the results of this trial

  • Need for concomitant surgery requiring an abdominal incision, use of graft material in the anterior compartment, or any use of synthetic graft material

  • Enrollment in other urinary incontinence trials including SISTEr/E-SISTEr or BE-DRI/E-BE-DRI

Contacts and Locations

Locations

Site City State Country Postal Code
1 University of Alabama Birmingham Alabama United States 35294
2 University of California San Diego California United States 92103
3 Kaiser Permanente San Diego California United States 92110
4 Loyola University Medical Center Maywood Illinois United States 60153
5 University of Maryland Baltimore Maryland United States 21201
6 Oakwood Hospital/Cancer Center Dearborn Michigan United States 48123
7 William Beaumont Hospital Royal Oak Michigan United States 48123
8 University of Pittsburgh Pittsburgh Pennsylvania United States 15213
9 University of Texas Southwestern Dallas Texas United States 75390
10 University of Texas Health Sciences Center San Antonio Texas United States 78229-3900
11 University of Utah Salt Lake City Utah United States 84132

Sponsors and Collaborators

  • HealthCore-NERI

Investigators

  • Study Chair: Ann Gormley, M.D., Dartmouth-Hitchcock Medical Center

Study Documents (Full-Text)

None provided.

More Information

Additional Information:

Publications

Responsible Party:
HealthCore-NERI
ClinicalTrials.gov Identifier:
NCT00325039
Other Study ID Numbers:
  • DK58229
First Posted:
May 11, 2006
Last Update Posted:
Jan 14, 2014
Last Verified:
Dec 1, 2013
Keywords provided by HealthCore-NERI
Additional relevant MeSH terms:

Study Results

Participant Flow

Recruitment Details Recruitment took place between April 2006 and June 2008. Patients were recruited from nine clinical sites. TOMUS (Trial Of Mid-Urethral Slings) was conducted by the Urinary Incontinence Treatment Network (UITN), a cooperative network consisting of urologists and urogynecologists at 9 clinical centers and a biostatistical coordinating center.
Pre-assignment Detail 3521 women were screened for eligibility. 1513 did not meet inclusion criteria; 1259 were eligible for inclusion in the study but were excluded (1001 declined to participate, 258 excluded for administrative reasons). 749 women provided written consent; of these 152 were excluded (63 ineligible, 66 withdrew consent, 23 administrative reasons).
Arm/Group Title Retropubic (RMUS) Transobturator (TMUS)
Arm/Group Description retropubic mid-urethral sling (TVT) transobturator mid-urethral sling (TVT-O and the Monarc)
Period Title: Overall Study
STARTED 298 299
COMPLETED 280 285
NOT COMPLETED 18 14

Baseline Characteristics

Arm/Group Title Retropubic (RMUS) Transobturator (TMUS) Total
Arm/Group Description retropubic mid-urethral sling (TVT) transobturator mid-urethral sling (TVT-O and the Monarc) Total of all reporting groups
Overall Participants 298 299 597
Age (Yrs) [Mean (Standard Deviation) ]
Mean (Standard Deviation) [Yrs]
52.7
(10.5)
53.1
(11.5)
52.9
(11.0)
Sex: Female, Male (Count of Participants)
Female
298
100%
299
100%
597
100%
Male
0
0%
0
0%
0
0%
Region of Enrollment (participants) [Number]
United States
298
100%
299
100%
597
100%

Outcome Measures

1. Primary Outcome
Title Objective Treatment Success at 12 Months
Description Objective treatment success: negative stress test, negative pad test, and no retreatment for stress urinary incontinence (SUI) including behavioral, pharmacologic or surgical procedures A provocative stress test standardized to volume and position is performed for direct observation of urine leakage. Observed urine loss from the urethra coincidental with the Valsalva maneuver or cough is a positive test; a negative test indicates no urine loss. Pad testing quantifies the amount of urine involuntarily lost and is used to reflect everyday incontinence; it is negative if loss is <15g/24 hrs.
Time Frame 12 months

Outcome Measure Data

Analysis Population Description
Because the study was designed as an equivalence trial, the outcome was assessed only in women treated per-protocol (n=291 and n=292 in RMUS, TMUS, respectively).
Arm/Group Title Retropubic (RMUS) Transobturator (TMUS)
Arm/Group Description retropubic mid-urethral sling (TVT) transobturator mid-urethral sling (TVT-O and the Monarc)
Measure Participants 291 292
Number [percentage of participants]
80.8
27.1%
77.7
26%
Statistical Analysis 1
Statistical Analysis Overview Comparison Group Selection Retropubic (RMUS), Transobturator (TMUS)
Comments With 294 women/arm, the study would have 80% power to show equivalence between the two procedures, with an equivalence margin of +/- 12 percentage points, at a two-sided significance level of 5%. A planned time-to-event interim analysis of the primary outcome (objective treatment success) was conducted when 33% of the anticipated treatment failures occurred. We adjusted the primary outcome analysis for this interim look by assigning nominal alpha values of 0.049 to the 95% confidence intervals.
Type of Statistical Test Non-Inferiority or Equivalence
Comments This study was an equivalence trial and was designed to have 80% power to show equivalence between the two sling procedures, with an equivalence margin of +/- 12 percentage points, at a two-sided significance level of 5%. The margin of +/- 12 was chosen on the basis of clinical considerations and a calculation of the number of patients it was feasible to enroll in the trial.
Statistical Test of Hypothesis p-Value
Comments
Method
Comments
Method of Estimation Estimation Parameter difference in success rate (RMUS-TMUS)
Estimated Value 3.0
Confidence Interval (2-Sided) 95%
-3.6 to 9.6
Parameter Dispersion Type:
Value:
Estimation Comments
2. Secondary Outcome
Title Patient Satisfaction at 12 Months
Description Patient satisfaction was assessed at the 12 month visit with the questions, "how satisfied or dissatisfied are you with the result of bladder surgery related to urine leakage?" Possible responses were completely satisfied, mostly satisfied, neutral, mostly dissatisfied, and completely dissatisfied. Completely and mostly satisfied were reported as "satisfied" and neutral, most dissatisfied and completely dissatisfied as "not satisfied".
Time Frame Follow-Up

Outcome Measure Data

Analysis Population Description
This is the number of women who answered the satisfaction questions at the 12 month visit (n=280 attended the 12 month visit in the retropubic arm and n=285 in the transobturator arm)
Arm/Group Title Retropubic (RMUS) Transobturator (TMUS)
Arm/Group Description retropubic mid-urethral sling (TVT) transobturator mid-urethral sling (TVT-O and the Monarc)
Measure Participants 262 261
Number [percentage of participants analyzed]
85.9
28.8%
90.0
30.1%
Statistical Analysis 1
Statistical Analysis Overview Comparison Group Selection Retropubic (RMUS), Transobturator (TMUS)
Comments Although the primary aim of the study was designed as an equivalence trial, the secondary aims were considered as superiority tests.
Type of Statistical Test Superiority or Other
Comments
Statistical Test of Hypothesis p-Value 0.14
Comments This was not adjusted for multiple comparisons; the a priori threshold for statistical significance was 0.05.
Method Chi-squared
Comments
Method of Estimation Estimation Parameter Difference in proportions
Estimated Value -4.1
Confidence Interval () 95%
to
Parameter Dispersion Type:
Value:
Estimation Comments
3. Primary Outcome
Title Subjective Treatment Success at 12 Months
Description Absence of self-reported symptoms of stress-type urinary incontinence, as assessed with the use of the Medical, Epidemiological and Social Aspects of Aging (MESA) questionnaire (responded never to all 9 MESA questions), no leakage recorded in a 3-day voiding diary and no retreatment for stress incontinence including behavioral, pharmacologic or surgical treatment.
Time Frame 12 months

Outcome Measure Data

Analysis Population Description
Because the study was designed as an equivalence trial, the outcome was assessed only in women treated per-protocol (n=291 in the Retropubic arm and n=292 in the transobturator arm).
Arm/Group Title Retropubic (RMUS) Transobturator (TMUS)
Arm/Group Description retropubic mid-urethral sling (TVT) transobturator mid-urethral sling (TVT-O and the Monarc)
Measure Participants 291 292
Number [percentage of participants]
62.2
20.9%
55.8
18.7%
Statistical Analysis 1
Statistical Analysis Overview Comparison Group Selection Retropubic (RMUS), Transobturator (TMUS)
Comments With 294 women/arm, the study would have 80% power to show equivalence between the two procedures, with an equivalence margin of +/- 12 percentage points, at a two-sided significance level of 5%. A planned time-to-event interim analysis of the primary outcome (objective treatment success) was conducted when 33% of the anticipated treatment failures occurred. We adjusted the primary outcome analysis for this interim look by assigning nominal alpha values of 0.049 to the 95% confidence intervals.
Type of Statistical Test Non-Inferiority or Equivalence
Comments This study was an equivalence trial and was designed to have 80% power to show equivalence between the two sling procedures, with an equivalence margin of +/- 12 percentage points, at a two-sided significance level of 5%. The margin of +/- 12 was chosen on the basis of clinical considerations and a calculation of the number of patients it was feasible to enroll in the trial.
Statistical Test of Hypothesis p-Value
Comments
Method
Comments
Method of Estimation Estimation Parameter difference in success (RMUS - TMUS)
Estimated Value 6.4
Confidence Interval (2-Sided) 95%
-1.6 to 14.3
Parameter Dispersion Type:
Value:
Estimation Comments
4. Secondary Outcome
Title Change in Quality of Life From Baseline to 12 Months
Description Scores on the Incontinence Impact Questionnaire range from 0 to 400 with higher scores indicating greater impact. The scores are changes from baseline to the 12 month visit (baseline - 12 months).
Time Frame Baseline - 12 months

Outcome Measure Data

Analysis Population Description
These are the number of patients with available quality of life data at the 12 month visit.
Arm/Group Title Retropubic (RMUS) Transobturator (TMUS)
Arm/Group Description retropubic mid-urethral sling (TVT) transobturator mid-urethral sling (TVT-O and the Monarc)
Measure Participants 264 263
Mean (Standard Deviation) [units on a scale]
126.8
(94.5)
132.9
(97.8)
Statistical Analysis 1
Statistical Analysis Overview Comparison Group Selection Retropubic (RMUS), Transobturator (TMUS)
Comments The null hypothesis is that the two arms do not differ according to quality of life, as measured by the IIQ.
Type of Statistical Test Superiority or Other
Comments
Statistical Test of Hypothesis p-Value 0.47
Comments
Method t-test, 2 sided
Comments
5. Secondary Outcome
Title Bother as Measured by the Urogenital Distress Inventory (UDI) at 12 Months
Description Urogenital Distress Inventory (UDI) scores range from 0 to 300 with higher scores indicating greater distress. Scores are changes from baseline to the 12 month visit (baseline - 12 months)
Time Frame 12 months

Outcome Measure Data

Analysis Population Description
This is the number of participants who had complete UDI information at the 12 month visit.
Arm/Group Title Retropubic (RMUS) Transobturator (TMUS)
Arm/Group Description retropubic mid-urethral sling (TVT) transobturator mid-urethral sling (TVT-O and the Monarc)
Measure Participants 264 263
Mean (Standard Deviation) [units on a scale]
106.7
(48.0)
110.3
(51.2)
Statistical Analysis 1
Statistical Analysis Overview Comparison Group Selection Retropubic (RMUS), Transobturator (TMUS)
Comments The UDI measure was compared using a two-sample t test.
Type of Statistical Test Superiority or Other
Comments
Statistical Test of Hypothesis p-Value 0.41
Comments
Method t-test, 2 sided
Comments

Adverse Events

Time Frame Consistent with the primary outcome reported at 12 months, adverse event data through the 12 month visit are reported here.
Adverse Event Reporting Description
Arm/Group Title Retropubic (RMUS) Transobturator (TMUS)
Arm/Group Description retropubic mid-urethral sling (TVT) transobturator mid-urethral sling (TVT-O and the Monarc)
All Cause Mortality
Retropubic (RMUS) Transobturator (TMUS)
Affected / at Risk (%) # Events Affected / at Risk (%) # Events
Total / (NaN) / (NaN)
Serious Adverse Events
Retropubic (RMUS) Transobturator (TMUS)
Affected / at Risk (%) # Events Affected / at Risk (%) # Events
Total 41/298 (13.8%) 19/299 (6.4%)
Blood and lymphatic system disorders
Postoperative bleeding 1/298 (0.3%) 1 0/299 (0%) 0
Nervous system disorders
Neurologic symptoms 1/298 (0.3%) 1 0/299 (0%) 0
Renal and urinary disorders
Urethral perforation 1/298 (0.3%) 1 0/299 (0%) 0
Recurrent cystitis, leading to diagnostic cystoscopy 1/298 (0.3%) 1 0/299 (0%) 0
Voiding dysfunction requiring surgery, use of catheter or both 8/298 (2.7%) 9 0/299 (0%) 0
Surgical and medical procedures
Mesh exposure 9/298 (3%) 10 5/299 (1.7%) 5
Mesh erosion 1/298 (0.3%) 1 1/299 (0.3%) 1
Surgical site infection 0/298 (0%) 0 2/299 (0.7%) 2
Granulation tissue 0/298 (0%) 0 1/299 (0.3%) 1
Bladder perforation 15/298 (5%) 15 0/299 (0%) 0
Vaginal epithelial perforation 6/298 (2%) 6 13/299 (4.3%) 13
Urothelial abrasion 0/298 (0%) 0 1/299 (0.3%) 1
Vascular disorders
Pulmonary embolus 0/298 (0%) 0 1/299 (0.3%) 1
Other (Not Including Serious) Adverse Events
Retropubic (RMUS) Transobturator (TMUS)
Affected / at Risk (%) # Events Affected / at Risk (%) # Events
Total 110/298 (36.9%) 89/299 (29.8%)
General disorders
Self-reported pain 6 or more weeks after procedure 7/298 (2.3%) 7 6/299 (2%) 7
Thrush 1/298 (0.3%) 1 0/299 (0%) 0
Medication reaction 0/298 (0%) 0 1/299 (0.3%) 1
Skin irritation 0/298 (0%) 0 1/299 (0.3%) 1
Bilateral leg pain 0/298 (0%) 0 1/299 (0.3%) 1
Decreased bladder sensation 1/298 (0.3%) 1 0/299 (0%) 0
Nervous system disorders
Neurologic symptom of numbness 6/298 (2%) 8 7/299 (2.3%) 9
Neurologic symptom of weakness 7/298 (2.3%) 7 21/299 (7%) 22
Psychiatric disorders
Anxiety 1/298 (0.3%) 1 0/299 (0%) 0
Renal and urinary disorders
Genitourinary 40/298 (13.4%) 46 24/299 (8%) 27
Voiding dysfunction 10/298 (3.4%) 16 4/299 (1.3%) 5
New urge incontinence 0/298 (0%) 0 1/299 (0.3%) 1
Persistent urge incontinence 36/298 (12.1%) 54 30/299 (10%) 55
Sac in pelvis (seroma) 0/298 (0%) 0 1/299 (0.3%) 1
Surgical and medical procedures
Mesh exposure 4/298 (1.3%) 4 3/299 (1%) 3
Surgical site infection 2/298 (0.7%) 2 2/299 (0.7%) 2
Granulation tissue 2/298 (0.7%) 2 2/299 (0.7%) 2
Wound edge separation 1/298 (0.3%) 1 0/299 (0%) 0
Minor wound 1/298 (0.3%) 1 0/299 (0%) 0
Vascular disorders
Vascular or hematologic 18/298 (6%) 20 7/299 (2.3%) 7

Limitations/Caveats

[Not Specified]

More Information

Certain Agreements

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

There is NOT an agreement between Principal Investigators and the Sponsor (or its agents) that restricts the PI's rights to discuss or publish trial results after the trial is completed.

Results Point of Contact

Name/Title Heather Litman, PhD
Organization New England Research Institutes, Inc.
Phone 617 972 3297
Email hlitman@neriscience.com
Responsible Party:
HealthCore-NERI
ClinicalTrials.gov Identifier:
NCT00325039
Other Study ID Numbers:
  • DK58229
First Posted:
May 11, 2006
Last Update Posted:
Jan 14, 2014
Last Verified:
Dec 1, 2013