Browsing by Author "Mandyata, Chomba"

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    Alcohol consumption and tobacco smoking associated with decreased antiretroviral therapy adherence among people living with HIV in Zambia: Evidence from a 2023 national NCDs/ HIV survey.
    (2026) Zyambo, Cosmas; Somwe, Paul; Musukuma, Mwiche; Mandyata, Chomba; Bwembya, Phoebe; Phiri, Henry; Chavula, Malizgani; Halwindi, Hikabasa; Zulu, Joseph; Mutale, Wilbroad
    BACKGROUND: In order to achieve the 95-95-95 goals and obtain optimal benefits from ART, PLWH must adhere to prescribed medication. AIM: Investigate factors associated with ART adherence in a clinical setting in Zambia. METHODS: National cross-sectional study involving 193 clinics across all 10 provinces of Zambia. The primary outcomes assessed were ART adherence status, associated behavioral factors, and clinical characteristics. Logistic regression analysis was conducted to evaluate associations between these factors and ART adherence. Both unadjusted odds ratios (UOR) and adjusted odds ratios (AOR) were calculated, with adjustments made for relevant covariates, and all estimates reported with 95% confidence intervals. RESULTS: Of the 5,204 PLWH, 7.1% were non-adherent to ART (9.7% males vs 5.9% females). Of those who were non adherent, 60% and 22% consumed alcohol and smoked tobacco respectively. In adjusted analysis, age; 45-59 (AOR: 0.5, 95% CI:0.32-0.79), 60+ (AOR: 0.26, 95% CI: 0.12-0.59) and education; Primary (AOR: 0.6, 95% CI: 0.4-0.9), secondary (AOR: 0.57, 95% CI: 0.4-0.82), college/university (AOR: 0.5, 95% CI: 0.29-0.89) were associated with decreased odds of being non-adherence to ART. In contrast, being male (AOR: 1.45, 95% CI:1.07-1.98), being in informal employment (AOR:1.65, 95% CI:1.15-2.36), having average yearly income; > $160 (AOR: 1.55, 95% CI: 1.16-2.06), Alcohol consumption; healthy consumption (AOR: 2.72, 95% CI: 1.9-3.89), unhealthy consumption (AOR: 2.76, 95% CI: 1.8-4.22), indeterminant consumption (AOR: 3.03, 95% CI: 2.04-4.5) and tobacco smoking (AOR: 95% CI: 2.03 1.42-2.9) were associated with increased odds of being non-adherence to ART. CONCLUSIONS: ART non-adherence among PLWH in Zambia is 7.1%, with higher rates in males. Substance use especially alcohol and tobacco are common among the non-adherent. The associations between alcohol consumption, tobacco smoking, and ART adherence highlight the potential value of targeted support strategies. These results can inform future longitudinal research and contribute to the development of evidence-based interventions.
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    Evaluating a multifaceted implementation strategy and package of evidence-based interventions based on WHO PEN for people living with HIV and cardiometabolic conditions in Lusaka, Zambia: protocol for the TASKPEN hybrid effectiveness-implementation stepped wedge cluster randomized trial.
    (2024-Jun-06) Herce, Michael E.; Bosomprah, Samuel; Masiye, Felix; Mweemba, Oliver; Edwards, Jessie K.; Mandyata, Chomba; Siame, Mmamulatelo ; Mwila, Chilambwe; Matenga, Tulani; Frimpong, Christiana ; Mugala, Anchindika; Mbewe, Peter; Shankalala, Perfect; Sichone, Pendasambo; Kasenge, Blessings; Chunga, Luanaledi ; Adams, Rupert; Banda, Brain; Mwamba, Daniel; Nachalwe, Namwinga; Agarwal, Mansi; Williams, Makeda J.; Tonwe, Veronica; Pry, Jake M.; Musheke, Maurice; Vinikoor, Michael; Mutale, Wilbroad
    BACKGROUND: Despite increasing morbidity and mortality from non-communicable diseases (NCD) globally, health systems in low- and middle-income countries (LMICs) have limited capacity to address these chronic conditions, particularly in sub-Saharan Africa (SSA). There is an urgent need, therefore, to respond to NCDs in SSA, beginning by applying lessons learned from the first global response to any chronic disease-HIV-to tackle the leading cardiometabolic killers of people living with HIV (PLHIV). We have developed a feasible and acceptable package of evidence-based interventions and a multi-faceted implementation strategy, known as "TASKPEN," that has been adapted to the Zambian setting to address hypertension, diabetes, and dyslipidemia. The TASKPEN multifaceted implementation strategy focuses on reorganizing service delivery for integrated HIV-NCD care and features task-shifting, practice facilitation, and leveraging HIV platforms for NCD care. We propose a hybrid type II effectiveness-implementation stepped-wedge cluster randomized trial to evaluate the effects of TASKPEN on clinical and implementation outcomes, including dual control of HIV and cardiometabolic NCDs, as well as quality of life, intervention reach, and cost-effectiveness. METHODS: The trial will be conducted in 12 urban health facilities in Lusaka, Zambia over a 30-month period. Clinical outcomes will be assessed via surveys with PLHIV accessing routine HIV services, and a prospective cohort of PLHIV with cardiometabolic comorbidities nested within the larger trial. We will also collect data using mixed methods, including in-depth interviews, questionnaires, focus group discussions, and structured observations, and estimate cost-effectiveness through time-and-motion studies and other costing methods, to understand implementation outcomes according to Proctor's Outcomes for Implementation Research, the Consolidated Framework for Implementation Research, and selected dimensions of RE-AIM. DISCUSSION: Findings from this study will be used to make discrete, actionable, and context-specific recommendations in Zambia and the region for integrating cardiometabolic NCD care into national HIV treatment programs. While the TASKPEN study focuses on cardiometabolic NCDs in PLHIV, the multifaceted implementation strategy studied will be relevant to other NCDs and to people without HIV. It is expected that the trial will generate new insights that enable delivery of high-quality integrated HIV-NCD care, which may improve cardiovascular morbidity and viral suppression for PLHIV in SSA. This study was registered at ClinicalTrials.gov (NCT05950919).