TASKPEN UH3: Effects of a Package of Evidence-based Interventions and Implementation Strategies Based on WHO PEN for People Living With HIV and Cardio-metabolic Conditions in Lusaka, Zambia
Study Details
Study Description
Brief Summary
The purpose of this study is to evaluate the effects of a multi-level intervention known as "TASKPEN," adapted from the World Health Organization (WHO) Package of Essential Noncommunicable Disease Interventions (WHO-PEN) for the Zambian public health system, on clinical and implementation outcomes for persons living with HIV (PLHIV) with co-morbid cardio-metabolic conditions in Lusaka, Zambia.
| Condition or Disease | Intervention/Treatment | Phase |
|---|---|---|
|
N/A |
Detailed Description
This hybrid effectiveness-implementation stepped wedge trial will be used to evaluate the clinical effectiveness and implementation outcomes and strategies. Investigators will evaluate the effects of TASKPEN on the primary clinical effectiveness outcome of dual HIV/ cardio-metabolic non-communicable diseases (NCD) control at 12 months, and the secondary implementation outcome of intervention reach in the clinic population. Other secondary outcomes will include longitudinal changes in the Atherosclerotic Cardiovascular Disease (ASCVD) Risk Estimator, changes in quality of life per the WHOQOL-HIV-Bref, modification of grade III hypertension, and HIV viral suppression at different accepted thresholds (i.e., <1,000 c/mL, <200 c/ml, <50 c/ml). A cluster will be defined as one health facility and their associated catchment area population (i.e., together a study site). Sequential crossover of sites will take place, from control to intervention, until all 12 clusters (i.e., all 12 sites) are exposed to the intervention before the end of the study. Trained and experienced study staff will conduct a bio-behavioral survey at baseline with approximately 1,020 participants across all study sites before introduction of the TASKPEN intervention. After this baseline survey is completed, four randomly selected clusters (i.e., 4 facilities) will be switched to the TASKPEN intervention (the first orange shaded step in Figure 3) over a ~4-week introduction/ "wash out" period, and then continue with TASKPEN implementation until the end of the trial. Six months later, another survey with 1,020 participants who have not participated previously will be done across all 12 sites at time T1 right before a second block of two clusters (i.e., clusters 5 and 6) are switched to the TASKPEN intervention. After another 6 months, the survey will be repeated, this time as a midline survey, and another two clusters (i.e., clusters 7 and 8) will be switched to the TASKPEN intervention after survey completion. Six months later, at time T3, another survey will be completed with 1,020 participants who have not volunteered previously right before the final four randomly selected clusters (i.e., clusters 9 through 12) switch to the TASKPEN intervention. After all facilities/ sites have received the intervention for at least 6 months, a final "end-line survey" will be administered at time T4. Once the end-line survey is completed, a total of approximately 5,100 participants will have completed a survey.
To overcome the limitations inherent to cross-sectional assessments of patient outcomes, and to facilitate collection of more detailed longitudinal data, a "nested cohort," will be embedded in the larger trial reflecting a representative sample of approximately 320 survey participants with co-morbid cardio-metabolic NCDs identified through study surveys to carefully follow longitudinal clinical outcomes in PLHIV with these conditions.
Embedded in the trial will be concurrent mixed methods data collection to assess implementation outcomes and to understand the mechanisms by which the evidence-based intervention package and associated implementation strategies did, or did not, achieve their intended effects or acted through the conceptual model of change.
Study Design
Arms and Interventions
| Arm | Intervention/Treatment |
|---|---|
| Experimental: TASKPEN The TASKPEN intervention is a package of five evidence-based intervention (EBI) components that enhances WHO's Package of Essential Noncommunicable Disease Intervention for Primary Care (WHO-PEN) and includes a multi-faceted implementation strategy centred on service integration within routine HIV care settings. The EBI components and multi-faceted strategy have been adapted to the Zambian setting during recently completed formative work." |
Other: TASKPEN
The package of integrated HIV/NCD services:
Integrated non-communicable/HIV care ("one stop shop" for services)
WHO PEN protocols, algorithm, & training materials adapted for Zambia
Access to cardio-metabolic condition screening & laboratory monitoring
Non-communicable disease-focused electronic medical record module
Strengthened NCD medication supply chain
|
| No Intervention: Standard of Care Screening, diagnosis, and treatment of cardio-metabolic NCDs are generally unavailable in the clinical departments where most PLHIV seek and receive health services. When these services are available, they tend to be siloed and offered only for hypertension in general outpatient medical settings that provide urgent care-like services. Healthcare workers do not have protocolized algorithms for NCD management in HIV service delivery settings. NCD equipment is often unavailable in ART and differentiated service delivery (DSD) clinics; most health facilities do not offer haemoglobin A1c or lipid panel testing; and fragmented NCD supply chain management systems mean that essential medications for the management of hypertension, diabetes, and dyslipidemia are often unavailable |
Outcome Measures
Primary Outcome Measures
- Percent of Participants with both HIV Viral Suppression and Control of Hypertension, Diabetes and Tobacco Use [Month 12]
Dual control of HIV and cardio-metabolic NCDs is defined as: HIV RNA <1,000 copies/mL on most recent measure AND absence of the following: 1) uncontrolled systolic and diastolic hypertension; 2) uncontrolled diabetes mellitus; and 3) current tobacco smoking.
- Number of Participants with both HIV Viral Suppression and Control of Hypertension, Diabetes and Tobacco Use [Month 12]
Dual control of HIV and cardio-metabolic NCDs is defined as: HIV RNA <1,000 copies/mL on most recent measure AND absence of the following: 1) uncontrolled systolic and diastolic hypertension; 2) uncontrolled diabetes mellitus; and 3) current tobacco smoking.
Secondary Outcome Measures
- Percent of Participants with Improvement in 10-year ASCVD Risk Score [up to 24 months]
Participants who experience numerical improvement in 10-year ASCVD risk score and experience improvement in risk category (for example, change from high risk to intermediate risk, high to borderline risk, borderline to low risk, etc.). Assessed at 12 and 24 months.
- Change in Blood Pressure Control from Baseline to Month 12 [Baseline, Month 12]
Average numerical change in systolic and diastolic blood pressure.
- Change in Blood Pressure Control from Baseline to Month 24 [Baseline, Month 24]
Average numerical change in systolic and diastolic blood pressure.
- Number of Participants with Severe Hypertension [up to 24 months]
Systolic blood pressure ≥180 mmHg and/or diastolic blood pressure ≥120 mmHg. Assessed at Baseline, 12 and 24 months.
- Percent of Participants with Severe Hypertension [1, 12 and 24 months]
Systolic blood pressure ≥180 mmHg and/or diastolic blood pressure ≥120 mmHg
- Average Change in Haemoglobin A1c and Fasting Glucose [Baseline up to 24 months]
Mean change in HgbA1c and/or fasting blood glucose from baseline at last assessment. Assessed at Baseline, 12 and 24 months.
- Ideal Cardiovascular Health (CVH) [1, 12, and 24 months]
Average change in Ideal CVH score on a 0-7 point Likert scale The Ideal CVH is based on the following factors: (1) Smoking: never or former smoker; (2) Body mass index<23 kg/m^2; (3) Physical activity: ≥150 min/wk of moderate-intensity physical activity, ≥75 min/wk of vigorous intensity physical activity, or ≥150 min/wk of moderate or vigorous intensity physical activity; (4) Diet: 4 or 5 healthy dietary components as defined below; (5) Total cholesterol <200 mg/dL; (6) Blood pressure <120/80 mm Hg; (7) Fasting glucose <100 mg/dL. For diet, the ideal metric is determined based on intake of fruits and vegetables (≥450 g/d), fish (≥198 g/wk), fiber-rich whole grains (≥85 g/d), sodium (<1500 mg/d), sugar-sweetened beverages (≤1 liter/wk). To calculate the ideal CVH score, each metric is given 1 point and the number of ideal CVH metrics is added up for each participant. The range of scores is 0 to 7 inclusive with higher scores indicating better cardiovascular health.
- Number of Participants with HIV-1 Viral Suppression [0, 12, and 24 months]
To be assessed at empirically supported thresholds of <1,000 c/mL, <200 c/mL, and <50 c/mL.
- Percent of Participants with HIV-1 Viral Suppression [0, 12, and 24 months]
To be assessed at empirically supported thresholds of <1,000 c/mL, <200 c/mL, and <50 c/mL.
- Number of Participants Retained in HIV Care [0, 12, and 24 months]
Number of participants with evidence of being retained in HIV care within the last ~180 days.
- Percent of Participants Retained in HIV Care [1, 12, and 24 months]
Percent of participants with evidence of being retained in HIV care within the last ~180 days.
- Variation of Medication Possession Ratio (MPR) ART [0, 12 and 24 months]
Number of days late for pharmacy refills by total days on treatment, and then subtracting that percentage from 100%--for antiretroviral therapy (ART).
- Variation of Medication Possession Ratio (MPR) NCD Medications [0, 12 and 24 months]
Number of days late for pharmacy refills by total days on treatment, and then subtracting that percentage from 100%--for NCD medications.
- Number of Participants with an Increase in Quality of Life (QOL) [up to 24 months]
Number of participants with an increase in quality of life score. Assessed at 12 and 24 months. A version of the World Health Organization (WHO)QOL-HIV BREF will be used with 31 questions over 6 domains adapted to the Zambia context. We will present an overall score where a higher score indicate a higher quality of life. Most items are scaled in a positive direction, but some domains (i.e., #1, #2, #3, and #6) are scaled in a negative direction and will be recoded (as 6 minus question score) such that high scores reflect better quality of life. The mean score of items within each domain will be used to calculate a domain score. The means scores will then multiplied by 4 to make domain scores comparable with the overall scores used in the WHOQOL, so that scores range between 4 and 20. An overall average score across all 6 domains will be reported.
- Percent of Participants with an Increase in Quality of Life [up to 24 months]
Percent of participants with an increase in quality of life score. Assessed at 12 and 24 months. A version of the WHOQOL-HIV BREF will be used with 31 questions over 6 domains adapted to the Zambia context. We will present an overall score where a higher score indicate a higher quality of life. Most items are scaled in a positive direction, but some domains (i.e., #1, #2, #3, and #6) are scaled in a negative direction and will be recoded (as 6 minus question score) such that high scores reflect better quality of life. The mean score of items within each domain will be used to calculate a domain score. The means scores will then multiplied by 4 to make domain scores comparable with the overall scores used in the WHOQOL, so that scores range between 4 and 20. An overall average score across all 6 domains will be reported.
Other Outcome Measures
- Number of Participants Reached [0, 12, and 24 months]
Number of PLHIV at the clinic (i.e., with documented receipt of ART/ HIV care services at a study site) screened for hypertension at 0, 12, and 24 months from TASKPEN introduction
- Percent of Participants Reached [0, 12, and 24 months]
Percent of PLHIV at the clinic (i.e., with documented receipt of ART/ HIV care services at a study site) screened for hypertension at 0, 12, and 24 months from TASKPEN introduction
- Number of Facilities Adopting TASKPEN [0, 12, and 24 months]
Number of facilities and providers initiating TASKPEN intervention/ integrated care at 0, 12, and 24 months
- Percent of Facilities Adopting TASKPEN [0, 12, and 24 months]
Percent of facilities and providers initiating TASKPEN intervention/ integrated care at 0, 12, and 24 months
- Level of Adherence to Implementation [0, 12, and 24 months]
Percent of nurses and other non-physician health workers at each site that supported intervention/ integrated care implementation at least once at 0, 12 and 24 months
- Mean Acceptability of Intervention Score [6 months]
Average (mean) Acceptability of Intervention Measure (AIM) score after TASKPEN implementation at ≥6 months from TASKPEN introduction The "Acceptability of Intervention Measure (AIM)" is a 4-item instrument measuring the acceptability of an evidence-based practice or intervention. A scale can be created for this measure by averaging responses from each item. Scale values range from 1 (completely disagree) to 5 (completely agree). Higher scores indicate greater acceptability, feasibility, or appropriateness on the AIM, FIM, or IAM, respectively. No items need to be reverse coded.
- Mean Feasibility of Intervention Score [6 months]
Average (mean) Feasibility of Intervention Measure (FIM) score after TASKPEN implementation at ≥6 months from TASKPEN introduction The "Feasibility of Intervention Measure (FIM)" is a 4-item instrument measuring the feasibility of an evidence-based practice or intervention. A scale can be created for this measure by averaging responses from each item. Scale values range from 1 (completely disagree) to 5 (completely agree). Higher scores indicate greater acceptability, feasibility, or appropriateness on the AIM, FIM, or IAM, respectively. No items need to be reverse coded.
- Mean Appropriateness of Intervention Score [6 months]
Average (mean) Intervention Appropriateness Measure (IAM) score after TASKPEN implementation at ≥6 months from TASKPEN introduction The "Intervention Appropriateness Measure (IAM)" is a 4-item instrument measuring the appropriateness of an evidence-based practice or intervention. A scale can be created for this measure by averaging responses from each item. Scale values range from 1 (completely disagree) to 5 (completely agree). Higher scores indicate greater acceptability, feasibility, or appropriateness on the AIM, FIM, or IAM, respectively. No items need to be reverse coded.
- Cost-effectiveness of intervention [0, 12, and 24 months]
Incremental cost-effectiveness ratios (ICERs) at 0, 12 and 24 months
Eligibility Criteria
Criteria
Objective 1:
Cross-sectional patient surveys (n=5100): all HIV-infected adults aged 18 years and older who seek HIV services at the study sites.
Following the baseline survey, investigators will exclude anyone who previously participated in a study survey. Investigators will also exclude people who present for one time services or who plan to transfer their HIV care to another site. Finally, people unwilling or unable to provide written informed consent will be excluded.
For the nested cohort, inclusion (n=320) participants will need to have been enrolled in a study survey and have evidence of one or more of the following cardio-metabolic conditions or risk factors at the time of the survey:
-
Any current tobacco use (any tobacco use within 30 days of the survey, whether daily or non-daily use);
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Hypertension as defined by WHO PEN/ HEARTS (i.e., systolic blood pressure (SBP) =140 mmHg and/or diastolic blood pressure (DBP) =90 mmHg);
-
Diabetes mellitus as defined by WHO PEN/ HEARTS (i.e., random plasma glucose = 11.1 mmol/L, fasting plasma glucose = 7 mmol/L, and/or hemoglobin A1c = 48 mmol/mol or =6.5%; and/or compatible clinical diagnosis);
-
Prediabetes (defined as having impaired fasting glucose of 6.1 to 6.9 mmol/L and/or haemoglobin A1c 42 to 48 mmol/mol or between 6.0-6.4%); and/or
-
Dyslipidaemia (defined as total cholesterol =5.2 mmol/L or low-density lipoprotein =3.4 mmol/L).
-
Investigators will exclude adults who have no documented evidence of HIV infection, or who do not have a cardio-metabolic NCD or risk factor of interest. Investigators will also exclude people who did not participate in a patient survey, plan to transfer their HIV care to another site, or are unwilling/ unable to provide written informed consent.
Objective 2 Participant inclusion criteria
In-depth interview (IDI) participants must be
-
HIV-positive adults
-
=18 years of age
-
survey and/or cohort participants and
-
had received HIV and/or NCD services at a TASKPEN study site.
Focus group discussion (FGD) participants must be:
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=18 years of age;
-
a non-physician health care worker (NPHW) or community health worker (CHW)/ lay health provider involved with TASKPEN or integrated HIV/NCD service delivery; and
-
generally familiar with HIV and/or NCD service delivery at their facility.
Key informant interview (KII) participants must be:
-
=18 years of age;
-
a facility-level ART, DSD, out-patient department (OPD), or relevant clinic leader/ manager/ in-charge, or policy maker at district, provincial, or national level in Zambia; and
-
generally familiar with HIV and/or NCD-related issues in their community.
Implementation questionnaire participants must be:
-
HIV-positive adults
-
=18 years of age
-
who had exposure to the TASKPEN intervention at a study site OR
-
=18 years of age,
-
a facility-level healthcare provider or manager at district, provincial, or national level in Zambia, and
-
familiar with the TASKPEN intervention.
Costing study participants must be:
-
HIV-positive adults
-
=18 years of age
-
who had received HIV and/or NCD services at a TASKPEN study site OR
-
=18 years of age and
-
a facility-level healthcare provider or manager at facility, district, provincial, or national level in Zambia, and generally familiar with HIV and/or NCD-related issues.
Participant exclusion criteria
-
Investigators will exclude adult IDI participants who have no evidence of having received HIV and/or NCD services at the sites during the study period, adult implementation questionnaire
-
participants who were not exposed/ familiar with the TASKPEN intervention, as well as
-
people unwilling or unable to provide written informed consent.
-
Investigators will exclude any potential IDI, FGD, or KII study participant if they are unwilling or unable to provide written informed consent.
Contacts and Locations
Locations
| Site | City | State | Country | Postal Code | |
|---|---|---|---|---|---|
| 1 | Bauleni Health Center | Lusaka | Zambia | ||
| 2 | Chawama 1st Level Hospital | Lusaka | Zambia | ||
| 3 | Chelstone Urban Health Center | Lusaka | Zambia | ||
| 4 | Chipata 1st Level Hospital | Lusaka | Zambia | ||
| 5 | Kabwata Urban Health Center | Lusaka | Zambia | ||
| 6 | Kalingalinga Urban Health Center | Lusaka | Zambia | ||
| 7 | Kamwala Urban Health Center | Lusaka | Zambia | ||
| 8 | Kanyama 1st Level Hospital | Lusaka | Zambia | ||
| 9 | Makeni Urban Health Center | Lusaka | Zambia | ||
| 10 | Mtendere Health Center | Lusaka | Zambia | ||
| 11 | Ng'ombe Urban Health Center | Lusaka | Zambia | ||
| 12 | Railway Urban Health Center | Lusaka | Zambia |
Sponsors and Collaborators
- University of North Carolina, Chapel Hill
- National Heart, Lung, and Blood Institute (NHLBI)
- Centre for Infectious Disease Research in Zambia
- University of Zambia
- Ministry of Health, Zambia
- Fogarty International Center of the National Institute of Health
Investigators
- Principal Investigator: Michael Herce, MD, MPH, University of North Carolina
- Principal Investigator: Wilbroad Mutale, MBChB, MPhil, PhD, Centre for Infectious Disease Research in Zambia
Study Documents (Full-Text)
None provided.More Information
Publications
None provided.- 22-2252
- 4UH3HL156389-03