SCALESAIAHTN: Expanding Health Systems Research to Optimize Hypertension Care Cascade in HIV-Infected Individuals in Mozambique
Study Details
Study Description
Brief Summary
Undiagnosed and untreated hypertension is a main driver of cardiovascular disease, affecting disproportionately low and middle-income countries, where guidelines to screen and manage hypertension are poorly used. More than 13% of Mozambique adults are infected with HIV, and over 900,000 are on anti-retroviral therapy. HIV clinics are the only services within primary care providing continued care, and can be used to standardize and scale the hypertension care cascade. Hypertension affects 40% of Mozambican adults, and thus HIV and HTN often coexist in the same person.
The investigators propose to use low-cost tools that improve service performance, promote routine hypertension diagnosis and management, and ameliorate flow through the hypertension cascade, thus improving patients outcomes. Building on a current project some districts of two provinces of central Mozambique, the investigators will establish scientific evidence on the effectiveness of a tool that uses cycles of evaluation and improvement of health system, to address the hypertension care cascade in HIV-infected people. The investigators will strengthen the framework currently in use (based on nurses) setting a novel modality delivered by district health supervisors, and will expand the geographic study area by adding 6 districts of one additional province in southern Mozambique (Maputo Province), to create a foundation for national scale-up.
The Project planning phase (two years) will develop a multi-sectoral partnership of key stakeholders, establish national technical working groups with the participation of the provinces, and identify key facilitators and barriers that could affect uptake of the results, integration of high blood pressure and HIV services, scale-up to the entire country, and sustainability of the tested framework. Additionally, the investigators will i) conduct a six-months pilot study to assess feasibility and acceptability of the district supervisor-led intervention in one primary care facility; and, ii) redesign tools and standard operating procedures, as necessary. During the implementation phase (last three years) the investigators will deploy the district-based dissemination and implementation randomized trial in 18 health facilities - using an intervention that involves assessment, effectiveness evaluation, promotion of local uptake, implementation and maintenance - and determine the costs of the hypertension care cascade optimization, by estimating the total incremental costs.
| Condition or Disease | Intervention/Treatment | Phase |
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Detailed Description
In Mozambique HIV prevalence is over 13% and hypertension (HTN) affects 40% of adults. HIV and HTN comorbidity is increasing with aging of HIV-infected population and expansion of antiretroviral therapy (ART), but guideline application for screening and management of HTN being low and uneven. Around 14% of adults are aware of their HTN status and only 3% of those with HTN have their condition controlled. The HIV treatment platform, being the only broadly implemented chronic care service, provides an opportunity to standardize and scale HTN screening and management.
Systems-level implementation strategies may reduce drop-offs along the HTN cascade, improve service quality, and maximize availability of efficacious HTN medicines. Systems engineering tools can identify drivers of inefficiency, support locally informed provider decision-making to prioritize solutions, and improve integration of services to reduce inefficiencies in complex, multi-step health services using simple, low cost, iterative adaptations in service delivery design. The participation of frontline staff and senior management champions in this process improves patient outcomes.
The investigators aim to describe HTN care cascade at the health facility level and use it as the entry point for systems optimization of HIV services, using cascade analysis and associated systems engineering tools. In central Mozambique a Systems Analysis and Improvement Approach (SAIA) identified HTN cascade steps for PLHIV, developed a HTN Cascade Analysis Tool (HCAT), mapped data sources, and developed a registry to populate the HCAT and capture study outcomes from outpatient registries and patient charts (SAIA-HTN). Building on this, our project will 'scale out' through the novel modality of delivery by district health supervisors, and 'scale up' by expanding to six districts in one additional province (SCALE SAIA-HTN). It also aims at developing a dissemination and implementation model to serve as a foundation for national scaling.
Projects Aims:
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To develop a multi-sectoral partnership of key stakeholders and establish HTN technical working groups at the national level and participating provinces;
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To identify key facilitators and barriers that could affect the adoption, integration, scale-up and sustainment of the SAIA-HTN implementation strategy;
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To conduct a pilot study to assess feasibility and acceptability of the district MOH supervisor-led SAIA-HTN intervention over six months in one primary care facility (to redesign tools and standard operating procedures as necessary);
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Develop a district-based dissemination and implementation of SAIA-HTN (SCALE SAIA-HTN) using the Reach, Effectiveness, Adoption, Implementation and Maintenance (RE-AIM) model to evaluate the program: a.Determine the proportion of health facilities and population in the province reached, and identification of sub-groups not reached (target: 33% of facilities and 80% HIV+ adults reached); b.Assess the intervention effect on HTN process measures (BP screening, HTN diagnosis, HTN medication initiation, maintenance on HTN treatment), and HTN treatment effectiveness (HTN control, HIV viral load suppression); c.Determine the proportion of districts and facilities adopting the intervention (target: 95%), and explore the determinants of adoption identified using the Organizational Readiness for Implementing Change (ORIC); d.Determine core elements of the scaled SAIA-HTN implementation process and describe drivers of success/failure using the Consolidated Framework for Implementation Research (CFIR); e.Calculate the proportion of districts sustaining the intervention 7, 14, 21 months post-introduction (target: >90% at 7 months, >80% at 14 months, and >65% at 21 months).
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Determine the costs of SCALE SAIA-HTN for care cascade optimization, including total and incremental costs of integrating HTN diagnosis and management into HIV care.
Methods The investigators will use the SAIA strategy to visualize and quantify interconnected service delivery steps, informed by previous SAIA research, epidemiologic research on HTN, and ongoing research SAIA-HTN to optimize HTN screening, care and treatment for PLHIV in central Mozambique (to evaluate SAIA-HTN's effectiveness on systems' and patient-level health outcomes for PLHIV).
Study Plan: The investigators will use multiple novel implementation science methods to understand and explain what influences implementation outcomes, including i) the CFIR to identify barriers and facilitators (determinants) to implementation, ii) the ORIC scale to assesses readiness for change as an organizational-level determinant of adoption, and iii) the RE-AIM evaluative Framework, which measures the active ingredients for public health impact (Reach, Effectiveness, Adoption, Implementation and Maintenance).
Planning phase: The investigators will mobilize a multi-sectoral stakeholder partnership, conduct a needs assessment (to evaluate facilitators and barriers that could affect adoption, integration, scale-up and sustainment of SCALE SAIA-HTN in province), and pilot the intervention's feasibility and acceptability over six months in one clinic (to refine implementation procedures for follow-on scaling out and scaling up).
Implementation phase: 'scale out' SAIA-HTN to test a novel delivery modality (using district supervisors), 'scale up' to cover an additional province in a novel geographic area, and evaluate its impact on cascade performance and patient outcomes. The investigators will randomly allocate health facilities from the 6 districts in Maputo Province into three implementation waves, each containing 6 facilities (across 2 districts per wave) undergoing a 7-month intensive implementation period, followed by a sustainment phase for 7, 14, or 21 months, respectively.
The SAIA-HTN implementation strategy uses an iterative, five-step process applied at the facility level to give clinic staff and managers a systems view of cascade performance, identify priority areas for improvement, discern modifiable solutions, and test workflow modifications.
SCALE SAIA-HTN will test integration and scale up of SAIA-HTN through routine management systems relying on district Ministry of Health (MOH) supervisors as the disseminating agents (rather than research nurses), in three facilities per district during a 7-month intensive phase (mentored by study assistants), and subsequent sustainment phase (led independently by district MOH supervisors). Based on trial results, the investigators will model out the costs and potential benefits on HTN management for PLHIV given different scale-up scenarios nationwide. The trial will culminate in the development and dissemination of the SCALE SAIA-HTN package, summarizing trial results and providing implementation and cost guidance to inform policy development and support national scale-up through routine management structures.
Study design: phased-in (stepped wedge) with random assignment of two districts to each of the three 7-month intervention waves, to reach 6 districts in Maputo Province by the end of the trial.
Study Setting: Maputo Province (population of approximately 880,000 inhabitants; >98% of formal health services offered through public sector clinics). Health facilities with highest numbers of active HIV+ patients on ART will be enrolled.
Study Team: This project brings together a diverse and uniquely qualified team of cardiovascular, HIV, community surveys, health systems, and implementation scientists.
Procedures Stakeholders meetings: to create a multi-sectoral partnership of key stakeholders and establish HTN technical working groups (TWG) at the national level and with participating provinces.
Stakeholder field visits to SAIA-HTN trial in central Mozambique: for key personnel and district MOH supervisors from the pilot facility.
Orientation meetings/workshops: for introducing SCALE SAIA-HTN, the implementation approach, and evaluation design to study investigators, provincial MOH managers, and district MOH supervisors in each province, who will review and agree on study procedures, and clinical and organizational skills-building approaches. Throughout the two phases of the project the TWG will inform on mediators and mechanisms of action, scale-up and sustainment efforts, and ensure responsiveness to local needs; at end of the planning phase, the TWG will review findings, discuss necessary adaptations and refine SCALE SAIA-HTN for the implementation phase.
Standardized readiness assessments: in the 6 first wave health facilities to assess structural and organizational readiness to deliver HTN services (ORIC measures, staffing levels, attributes and training, availability of essential commodities, equipment and supplies, and infrastructure) and repeated for subsequent waves prior to launching intensive implementation phases.
Pilot study: Outpatient staff managing HIV/CVD care and district MOH supervisors will participate in orientation training for the feasibility and acceptability of the SCALE SAIA-HTN intervention, which will be carried out over six months in one primary care facility. Tools and standard operating procedures will be redesigned as necessary for the implementation phase. Facility-based HTN screening will be carried out by nurses at entry into the pilot facility; all hypertensive (new and existing) patients will be recruited, with the support of district supervisors and study teams. Feasibility and acceptability will include i) measurement of intervention fidelity, reach and exposure, and adoption; ii) knowledge and competency questionnaire to health personnel. Follow-up visits to both monitor and support implementation will be carried out twice in the first month, and monthly thereafter. Additional data will be collected by: key informant interviews with the district supervisors, facility managers and frontline staff to assess acceptability of content and delivery of the intervention; questionnaire to participating staff pre- and post-intervention.
Evaluate programs' Reach, Effectiveness, Adoption, Implementation and Maintenance (RE-AIM) Reach: determine the number, proportion/representativeness of individuals reached by interventions; use study reports to estimate the proportion of facilities in the two provinces reached by SCALE SAIA-HTN (target: 30%); determine the number and proportion of HIV-infected adults with HTN reached (target: 80%).
Effectiveness: HTN treatment effectiveness (primary effectiveness outcome: HTN control, Secondary outcomes: HIV viral load suppression, proportion of HIV- infected patients screened for HTN in outpatient services, HTN diagnosis, HTN prescription of eligible patients, >90% patient adherence to HTN treatment).
Adoption: ORIC assessment scale (target of 95%) used to six frontline staff working across the HIV-HTN cascade and facility leadership in each clinic (n=108), to describe determinants of adoption.
Implementation: Tools at CFIR website will be adapted to gather data via interviews and FGDs with facility and district staff (qualitative), intervention meeting minutes (qualitative), and annual quantitative questionnaires to quantify facility structural determinants of implementation of HTN management guidelines.
Maintenance. Proportion of districts sustaining the intervention as designed 7, 14 and 21 months post-introduction (target: >90% at 7 months, >80% at 14 months, and >65% at 21 months). In-depth interviews and FGDs to probe district/facility perspectives on determinants of sustainment
Determine the costs of SCALE SAIA-HTN for care cascade optimization: total and incremental costs of integrating HTN diagnosis and management into HIV care. Cost will be measured using mix of gross costing and micro-costing. Cost effectiveness analysis will follow the 2nd panel and Consolidated Economic Evaluation Reporting Standards (CHEERS checklist).
Study Design
Arms and Interventions
| Arm | Intervention/Treatment |
|---|---|
| Experimental: intervention health facilities Health facilities implement the optimization of the cascade under research team support and continuous supervision |
Other: Systems Analysis and Improvement Approach
Intensive phase: district MOH supervisors receive a one-week training on SAIA-HTN. The first year of implementation will be mentored by INS study personnel who will accompany and support district MOH supervisors as they implement at the facility level. Over the first week of each iterative cycle, facility teams populate and interpret the HCAT, develop process maps, define one to two micro-interventions and indicators to monitor these modifications. Facility teams receive bi-weekly mentorship visits by district supervisors and study personnel for the first two months, followed by monthly visits throughout intensive implementation.
Sustainment phase (7, 14 or 21 months, depending on implementation wave allocation): district supervisors will independently lead implementation, with financial support for travel to clinics and to hold meetings, but without intensive support from study personnel.
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| No Intervention: Control Health facilities implement the optimization of the cascade and maintain supervision without research team support |
Outcome Measures
Primary Outcome Measures
- REACH Year 3 - health facilities [Year 3]
Proportion of health facilities in Maputo Province reached and identification of sub-groups not reached (target: 33% of facilities and 80% HIV+ adults reached).
- REACH Year 3 - population [Year 3]
Proportion of population in Maputo Province reached and identification of sub-groups not reached (target: 33% of facilities and 80% HIV+ adults reached).
- REACH Year 4 - health facilities [Year 4]
Proportion of health facilities in Maputo Province reached and identification of sub-groups not reached (target: 33% of facilities and 80% HIV+ adults reached).
- REACH Year 4 - population [Year 4]
Proportion of population in Maputo Province reached and identification of sub-groups not reached (target: 33% of facilities and 80% HIV+ adults reached).
- REACH Year 5 - health facilities [Year 5]
Proportion of health facilities in Maputo Province reached and identification of sub-groups not reached (target: 33% of facilities and 80% HIV+ adults reached).
- REACH Year 5 - population [Year 5]
Proportion of population in Maputo Province reached and identification of sub-groups not reached (target: 33% of facilities and 80% HIV+ adults reached).
- Screening EFFECTIVENESS Year 3 - BP screening coverage [Year 3]
Proportion of adult patients screened
- Screening EFFECTIVENESS Year 3 - Prevalence [Year 3]
Prevalence of HTN among those screened
- Screening EFFECTIVENESS Year 3 - Proportion initiating HTN medication [Year 3]
Proportion initiating HTN medication
- Screening EFFECTIVENESS Year 3 - Proportion maintained on treatment [Year 3]
Proportion maintained on treatment
- Screening EFFECTIVENESS Year 4 - BP screening coverage [Year 4]
Proportion of adult patients screened
- Screening EFFECTIVENESS Year 4 - Prevalence of HTN among those screened [Year 4]
Prevalence of HTN among those screened
- Screening EFFECTIVENESS Year 4 - Proportion initiating HTN medication [Year 4]
Proportion initiating HTN medication
- Screening EFFECTIVENESS Year 4 - Proportion maintained on treatment [Year 4]
Proportion maintained on treatment
- Screening EFFECTIVENESS Year 5 - BP screening coverage [Year 5]
Proportion of adult patients screened
- Screening EFFECTIVENESS Year 5 - Prevalence of HTN among those screened [Year 5]
Prevalence of HTN among those screened
- Screening EFFECTIVENESS Year 5 - Proportion initiating HTN medication [Year 5]
Proportion initiating HTN medication
- Screening EFFECTIVENESS Year 5 - Proportion maintained on treatment [Year 5]
Proportion maintained on treatment
- Treatment EFFECTIVENESS Year 3 - HTN control [Year 3]
proportion of patients with HTN controlled
- Treatment EFFECTIVENESS Year 3 - HIV viral load suppression [Year 3]
proportion of HIV patients with viral load suppression
- Treatment EFFECTIVENESS Year 4 - HTN control [Year 4]
proportion of patients with HTN controlled
- Treatment EFFECTIVENESS Year 4 - HIV viral load suppression [Year 4]
proportion of HIV patients with viral load suppression
- Treatment EFFECTIVENESS Year 5 - HTN control [Year 5]
proportion of patients with HTN controlled
- Treatment EFFECTIVENESS Year 5 - HIV viral load suppression [Year 5]
proportion of HIV patients with viral load suppression
- ADOPTION Year 4 - districts and facilities [Year 4]
Proportion of districts and facilities adopting the intervention (target: 95%)
- ADOPTION Year 4 - Organizational Readiness for Implementing Change (ORIC) [Year 4]
Assess the extent to which organizational members are psychologically and behaviorally prepared to implement change (change commitment and change efficacy) using the Likert scale from 1("disagree") to 5 ("strongly agree")
- ADOPTION Year 5 - districts and facilities [Year 5]
Proportion of districts and facilities adopting the intervention (target: 95%)
- ADOPTION Year 5 - Organizational Readiness for Implementing Change (ORIC) [Year 5]
Assess the extent to which organizational members are psychologically and behaviorally prepared to implement change (change commitment and change efficacy) using the Likert scale from 1("disagree") to 5 ("strongly agree")
- IMPLEMENTATION Year 3 - Determine core elements of the scaled SAIA-HTN implementation process [Year 3]
Use the Consolidated Framework for Implementation Research to guide examination of implementation process through semi-structured in-depth interviews and focus group discussions
- IMPLEMENTATION Year 3 - drivers of success/failure [Year 3]
Use the Consolidated Framework for Implementation Research (CFIR) to describe determinants of success and failure found across implementing districts and facilities through semi-structured in-depth interviews and focus group discussions
- IMPLEMENTATION Year 4 - Determine core elements of the scaled SAIA-HTN implementation process [Year 4]
Use the Consolidated Framework for Implementation Research to guide examination of implementation process through semi-structured in-depth interviews and focus group discussions
- IMPLEMENTATION Year 4 - drivers of success/failure [Year 4]
Use the Consolidated Framework for Implementation Research (CFIR) to describe determinants of success and failure found across implementing districts and facilities through semi-structured in-depth interviews and focus group discussions
- IMPLEMENTATION Year 5 - Determine core elements of the scaled SAIA-HTN implementation process [Year 5]
Use the Consolidated Framework for Implementation Research to guide examination of implementation process through semi-structured in-depth interviews and focus group discussions
- IMPLEMENTATION Year 5 - drivers of success/failure [Year 5]
Use the Consolidated Framework for Implementation Research (CFIR) to describe determinants of success and failure found across implementing districts and facilities through semi-structured in-depth interviews and focus group discussions
- MAINTENANCE Year 3 [Year 3]
Proportion of districts sustaining the intervention as designed 7 months post introduction (first wave of health facilities)
- MAINTENANCE Year 4 [Year 4]
Proportion of districts sustaining the intervention as designed 14 and 21 months post introduction for second and first wave of health facilities, respectively
- MAINTENANCE Year 5 [Year 5]
Proportion of districts sustaining the intervention as designed 7, 14 and 21 months post introduction for third, second and first wave of health facilities, respectively
- COST ESTIMATION Year 4 [Year 4]
estimate its incremental costs of SCALE SAIA HTN compared to the status quo
- COST ESTIMATION Year 5 [Year 5]
Estimate incremental costs of SCALE SAIA HTN compared to the status quo
- ESTIMATING AFFORDABILITY AND BUDGET IMPACT Year 4 [Year 4]
Estimate the cost per person screened and treated for HTN
- ESTIMATING AFFORDABILITY AND BUDGET IMPACT Year 5 [Year5]
Estimate the cost per person screened and treated for HTN
- ECONOMIC EVALUATION Year 4 [Year 4]
Comparing the total costs of HTN diagnosis and care as a proportion of the HIV care budget and estimate QALYs
- ECONOMIC EVALUATION Year 5 [Year 5]
Comparing the total costs of HTN diagnosis and care as a proportion of the HIV care budget and estimate QALYs
Eligibility Criteria
Criteria
Inclusion Criteria:
- Primary care facility with ongoing cohort of ART patients (minimum 800 patients)
Exclusion Criteria:
- Health facility unaccessible during part of the year
Contacts and Locations
Locations
No locations specified.Sponsors and Collaborators
- Eduardo Mondlane University
- University of Washington
- Instituto Nacional de Saúde, Mozambique
- Mozambique Institute for Health Education and Research
- National Heart, Lung, and Blood Institute (NHLBI)
Investigators
- Principal Investigator: Ana OH Mocumbi, MD PhD, Eduardo Mondlane University
Study Documents (Full-Text)
None provided.More Information
Publications
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