Browsing by Author "Mukamba, Njekwa"

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Comparison of patient exit interviews with unannounced standardised patients for assessing HIV service delivery in Zambia: a study nested within a cluster randomised trial.
(2023-Jul-05) Sikombe, Kombatende ; Pry, Jake M.; Mody, Aaloke; Rice, Brian; Bukankala, Chama; Eshun-Wilson, Ingrid; Mutale, Jacob; Simbeza, Sandra; Beres, Laura K.; Mukamba, Njekwa; Mukumbwa-Mwenechanya, Mpande ; Mwamba, Daniel; Sharma, Anjali; Wringe, Alison ; Hargreaves, James; Bolton-Moore, Carolyn; Holmes, Charles; Sikazwe, Izukanji; Geng, Elvin
OBJECTIVES: To compare unannounced standardised patient approach (eg, mystery clients) with typical exit interviews for assessing patient experiences in HIV care (eg, unfriendly providers, long waiting times). We hypothesise standardised patients would report more negative experiences than typical exit interviews affected by social desirability bias. SETTING: Cross-sectional surveys in 16 government-operated HIV primary care clinics in Lusaka, Zambia providing antiretroviral therapy (ART). PARTICIPANTS: 3526 participants aged ≥18 years receiving ART participated in the exit surveys between August 2019 and November 2021. INTERVENTION: Systematic sample (every n OUTCOME MEASURES: We compared patient experience among patients who received brief training prior to their care visit (explaining each patient experience construct in the exit survey, being anonymous, without manipulating behaviour) with those who did not undergo training on the survey prior to their visit. RESULTS: Among 3526 participants who participated in exit surveys, 2415 were untrained (56% female, median age 40 (IQR: 32-47)) and 1111 were trained (50% female, median age 37 (IQR: 31-45)). Compared with untrained, trained patients were more likely to report a negative care experience overall (adjusted prevalence ratio (aPR) for aggregate sum score: 1.64 (95% CI: 1.39 to 1.94)), with a greater proportion reporting feeling unwelcome by providers (aPR: 1.71 (95% CI: 1.20 to 2.44)) and witnessing providers behaving rude (aPR: 2.28 (95% CI: 1.63 to 3.19)). CONCLUSION: Trained patients were more likely to identify suboptimal care. They may have understood the items solicited better or felt empowered to be more critical. We trained existing patients, unlike studies that use 'standardised patients' drawn from outside the patient population. This low-cost strategy could improve patient-centred service delivery elsewhere. TRIAL REGISTRATION NUMBER: Assessment was nested within a parent study; www.pactr.org registered the parent study (PACTR202101847907585).
Developing a framework for understanding policy decision-making behaviors in the transition of an HIV prevention program towards sustainability: a case study from Zambia's voluntary medical male circumcision program.
(2024) Gantayat, Nishan ; Baer, James; Gangaramany, Alok; Kretschmer, Steve; Surana, Rasi; Samona, Alick; Mukamba, Njekwa; Jere, Bright; Chinsenga, Tina; Prasad, Ram; Goetschius, Stephen ; Sharma, Saransh
Faced with declining donor funding for HIV, low- and middle-income countries must identify efficient and cost-effective ways to integrate HIV prevention programs into public health systems for long-term sustainability. In Zambia, donor support to the voluntary medical male circumcision (VMMC) program, which previously funded non-governmental organizations as implementing partners, is increasingly being directed through government structures instead. We developed a framework to understand how the behaviors of individual decision-makers within the government could be barriers to this transition. We interviewed key stakeholders from the national, provincial, and district levels of the Ministry of Health, and from donors and partners funding and implementing Zambia's VMMC program, exploring the decisions required to attain a sustainable VMMC program and the behavioral dynamics involved at personal and institutional levels. Using pattern identification and theme matching to analyze the content of the responses, we derived three core decision-making phases in the transition to a sustainable VMMC program: 1) developing an alternative funding strategy, 2) developing a policy for early-infant (0-2 months) and early-adolescent (15-17 years) male circumcision, which is crucial to sustainable HIV prevention; and 3) identifying integrated and efficient implementation models. We formulated a framework showing how, in each phase, a range of behavioral dynamics can form barriers that hinder effective decision-making among stakeholders at the same level (e.g., national ministries and donors) or across levels (e.g., national, provincial and district). Our research methodology and the resulting framework offer a systematic approach for in-depth investigations into organizational decision-making in public health programs, as well as development programs beyond VMMC and HIV prevention. It provides the insights necessary to map organizational development and policy-making transition plans to sustainability, by explaining tangible factors such as organizational processes and systems, as well as intangibles such as the behaviors of policymakers and institutional actors.
Effect of a person-centered care intervention on return and sustained reengagement after treatment interruptions from HIV care in Zambia: A post-hoc analysis of a stepped-wedged cluster randomized trial.
(2026-Sep) Mody, Aaloke; Sikombe, Kombatende; Simbeza, Sandra ; Mukamba, Njekwa ; Beres, Laura K.; Pry, Jake M.; Sharma, Anjali; Mutale, Jacob; Dube, Alida Z.; Mulabe, Musunge; Mulenga, Lloyd ; Sivile, Suilanji; Ratliff, April; Goss, Charles W.; Holmes, Charles B.; Bolton-Moore, Carolyn ; Sikazwe, Izukanji; Geng, Elvin H.
BACKGROUND: Poor client-provider interactions lead to reinforcing cycles of treatment interruptions (TIs) from HIV care and fear of return, undermining sustained retention. We previously demonstrated a multi-component person-centered care intervention (PCC) targeting healthcare worker (HCW) behavior improved client experience and retention in HIV care. To understand mechanisms of improved retention, we evaluated the effect of the PCC intervention on return after TIs and sustained retention after return in a post-hoc analysis, hypothesizing that friendlier HCW attitudes enable successful reengagement into care. METHODS AND FINDINGS: We implemented the PCC intervention at 24 clinics in Zambia in a stepped-wedge, cluster randomized trial from Aug 2019 to Nov 2021. Clinics were allocated into 4 groups (8 clinics in Groups 1 and 4, and 4 each in Groups 2 and 3) and randomly assigned to crossover from control to intervention every 6 months. Under control, clinics provided routine HIV care without additional support. Afterwards, clinics received the PCC intervention targeting caring aspects of HCW behavior with 1) training and coaching on PCC practices, 2) measurement and feedback of client experience (via exit interviews), and 3) small facility-level incentives. We examined individuals living with HIV who became >30 days late to a scheduled visit (i.e., TI), categorizing intervention exposure based on the last visit prior to TI. We used electronic health records to assess the effect of the PCC intervention on 1) return to HIV care after a TI, and 2) repeat TIs among those who returned. We used multistate analytic methods to estimate crude incidence of return and repeat TIs and prevalence of being in care at 1-year. We used shared frailty Cox proportional hazards and mixed-effects Poisson models to obtain formal comparisons that accounted for the stepped-wedge design. Individuals were censored at intervention crossover or database closure. During the study period, 128,910 clients (n = 69,671 control, n = 59,239 intervention) became >30 days late (64.3% female, median age 38y [IQR 31,45], median years in care 2.5y [IQR 0.6,6.7]). The PCC intervention increased incidence of return after TI at 12-months (72.3% intervention versus 67.7% control, crude risk difference [RD] +4.6% [CI 4.1,5.2], adjusted hazard ratio [aHR] 1.16 [CI 1.12,1.20]; p < 0.001). Among returners, the intervention decreased incidence of repeat TIs (44.3% versus 55.6%, RD -11.4% [CI -12.2,-10.6], aHR 0.50 [CI 0.45,0.55]; p < 0.001) and increased the proportion in care (with or without repeat TIs) (82.7% versus 73.4%, RD +9.3% [CI 8.6,10.0], adjusted risk ratio [aRR] 1.14 [CI 1.05,1.25]; p = 0.002) at 12-months after return. Overall, the PCC intervention increased the proportion in care 12-months after a TI from 51.5% to 60.1% (RD +8.7% [CI 8.0,9.3], aRR 1.19 [CI 1.05,1.35]; p = 0.008). Effect sizes were similar in direction and magnitude in multiple sensitivity analyses with varying precision. Limitations included post-hoc analysis and those associated with stepped-wedge design. CONCLUSIONS: The PCC intervention likely improved rates of return to care after TIs, sustained reengagement after return, and overall retention among individuals with TIs. Strategies targeting caring aspects of HCW behavior and client experience may help lower barriers to and address persistent challenges with reengagement in care.
Estimated mortality on HIV treatment among active patients and patients lost to follow-up in 4 provinces of Zambia: Findings from a multistage sampling-based survey.
(2018-Jan) Holmes, Charles B.; Sikazwe, Izukanji; Sikombe, Kombatende; Eshun-Wilson, Ingrid; Czaicki, Nancy; Beres, Laura K.; Mukamba, Njekwa; Simbeza, Sandra; Bolton-Moore, Carolyn; Hantuba, Cardinal; Mwaba, Peter; Phiri, Caroline; Padian, Nancy; Glidden, David V.; Geng, Elvin
BACKGROUND: Survival represents the single most important indicator of successful HIV treatment. Routine monitoring fails to capture most deaths. As a result, both regional assessments of the impact of HIV services and identification of hotspots for improvement efforts are limited. We sought to assess true mortality on treatment, characterize the extent under-reporting of mortality in routine health information systems in Zambia, and identify drivers of mortality across sites and over time using a multistage, regionally representative sampling approach. METHODS AND FINDINGS: We enumerated all HIV infected adults on antiretroviral therapy (ART) who visited any one of 64 facilities across 4 provinces in Zambia during the 24-month period from 1 August 2013 to 31 July 2015. We identified a probability sample of patients who were lost to follow-up through selecting facilities probability proportional to size and then a simple random sample of lost patients. Outcomes among patients lost to follow-up were incorporated into survival analysis and multivariate regression through probability weights. Of 165,464 individuals (64% female, median age 39 years (IQR 33-46), median CD4 201 cells/mm3 (IQR 111-312), the 2-year cumulative incidence of mortality increased from 1.9% (95% CI 1.7%-2.0%) to a corrected rate of 7.0% (95% CI 5.7%-8.4%) (all ART users) and from 2.1% (95% CI 1.8%-2.4%) to 8.3% (95% CI 6.1%-10.7%) (new ART users). Revised provincial mortality rates ranged from 3-9 times higher than naïve rates for new ART users and were lowest in Lusaka Province (4.6 per 100 person-years) and highest in Western Province (8.7 per 100 person-years) after correction. Corrected mortality rates varied markedly by clinic, with an IQR of 3.5 to 7.5 deaths per 100 person-years and a high of 13.4 deaths per 100 person-years among new ART users, even after adjustment for clinical (e.g., pretherapy CD4) and contextual (e.g., province and clinic size) factors. Mortality rates (all ART users) were highest year 1 after treatment at 4.6/100 person-years (95% CI 3.9-5.5), 2.9/100 person-years (95% CI 2.1-3.9) in year 2, and approximately 1.6% per year through 8 years on treatment. In multivariate analysis, patient-level factors including male sex and pretherapy CD4 levels and WHO stage were associated with higher mortality among new ART users, while male sex and HIV disclosure were associated with mortality among all ART users. In both cases, being late (>14 days late for appointment) or lost (>90 days late for an appointment) was associated with deaths. We were unable to ascertain the vital status of about one-quarter of those lost and selected for tracing and did not adjudicate causes of death. CONCLUSIONS: HIV treatment in Zambia is not optimally effective. The high and sustained mortality rates and marked under-reporting of mortality at the provincial-level and unexplained heterogeneity between regions and sites suggest opportunities for the use of corrected mortality rates for quality improvement. A regionally representative sampling-based approach can bring gaps and opportunities for programs into clear epidemiological focus for local and global decision makers.
HIV care experiences and health priorities during the first wave of COVID-19: clients' perspectives - a qualitative study in Lusaka, Zambia.
(2022-Nov-30) Mukamba, Njekwa; Sharma, Anjali; Mwamba, Chanda; Nyirenda, Herbert; Foloko, Marksman; Lumbo, Kasapo; Christopoulos, Katerina; Simbeza, Sandra; Sikombe, Kombatende; Holmes, Charles B.; Geng, Elvin H.; Sikazwe, Izukanji; Bolton-Moore, Carolyn; Beres, Laura K.
BACKGROUND: The novel COVID-19 pandemic threatened to disrupt access to human immunodeficiency (HIV) treatment for persons living with HIV (PLHIV), two-thirds of whom live in sub-Saharan Africa. To inform a health system response supportive of continuity of care, we sought to understand clients' HIV care experiences and health priorities during the first wave of COVID-19 outbreak in Lusaka, Zambia. METHODS: Leveraging a study cohort of those who completed periodic SMS surveys on HIV care, we purposefully sampled 25 PLHIV after first confirmed COVID-19 case was reported in Zambia on 18 RESULTS: All participants were aware of COVID-19, and HIV care experiences and health priorities of clients were affected by associated changes at health system, household, and individual level. The health system instituted early clinic visits to provide 6-months of antiretroviral therapy (ART) for stable patients and 3-months for unstable patients to reduce clinic visits and wait times. Most patients welcomed this long-desired extended appointment spacing. Some reported feeling respected and engaged when health care workers telephoned requesting their early clinic visit. However, others felt discouraged by an absence of physical distancing during their clinic visit due to 'severe acute respiratory syndrome coronavirus 2' (SARS-CoV-2) infection concerns. Several expressed a lack of clarity regarding next viral load monitoring date and means for receiving results. Patients suggested regular patient-facility communication by telephone and SMS. Patients emphasized that COVID-19 restrictions led to loss of employment and household income, exacerbating poverty and difficulties in taking ART. At individual level, most participants felt motivated to stay healthy during COVID-19 by ART adherence and regular laboratory monitoring. CONCLUSIONS: Clients' HIV care and health priorities during the first wave of COVID-19 in Lusaka province were varied with a combination of positive and negative experiences that occurred especially at health system and individual levels, while at household level, the experiences were all negative. More research is needed to understand how patients practice resiliency in the widespread context of socio-economic instability. Governments and patients must work together to find local, health systems solutions to support ART adherence and monitoring. Additionally, the health system should consider how to build on changes for long-term HIV management and service delivery.
How might improved estimates of HIV programme outcomes influence practice? A formative study of evidence, dissemination and response.
(2020-Oct-16) Mukamba, Njekwa; Beres, Laura K.; Mwamba, Chanda; Law, Jeanna W.; Topp, Stephanie M.; Simbeza, Sandra; Sikombe, Kombatende; Padian, Nancy; Holmes, Charles B.; Geng, Elvin H.; Sikazwe, Izukanji
BACKGROUND: While HIV programmes have started millions of persons on life-saving antiretroviral therapy in Africa, longitudinal health information systems are frail and, therefore, data about long-term survival is often inaccurate or unknown to HIV programmes. The 'Better Information for Health in Zambia' (BetterInfo) Study - a regional sampling-based survey to assess retention and mortality in HIV programmes in Zambia - found both retention and mortality to be higher than prevailing estimates from national surveillance systems. We sought to understand how Zambian health decision-makers at different health system levels would respond to these new data, with a view to informing research translation. METHODS: We interviewed 25 purposefully sampled health decision-makers from community, facility, district, provincial and national levels. During the interviews, we shared retention and mortality estimates from both routine programme surveillance and those generated by the study. Transcripts were analysed for inductive and deductive themes, the latter drawing on Weiss's framework that policy-makers interpret and apply evidence as 'warning', 'guidance', 'reconceptualisation' or 'mobilisation of support'. FINDINGS: All decision-makers found study findings relevant and important. Decision-makers viewed the underestimates of mortality to be a warning about the veracity and informativeness of routine data systems. Decision-makers felt guided by the findings to improve data monitoring and, acknowledging limitations of routine data, utilised episodic patient tracing to support improved data accuracy. Findings catalysed renewed motivation and mobilisation by national level decision-makers for differentiated models of HIV care to improve patient outcomes and also improved data management systems to better capture patient outcomes. Inductive analysis highlighted a programmatic application data interpretation, in which study findings can influence facility and patient-level decision-making, quality of care and routine data management. CONCLUSIONS: New epidemiological data on patient outcomes were widely seen as informative and relevant and can potentially catalyse health system action such as using evaluations to supplement electronic medical record data to improve HIV programmes. Formative evidence suggests that targeting research dissemination at different levels of the health system will elicit different responses. Researchers supporting the translation of evidence to action should leverage all relevant levels of the health system to facilitate both policy and programmatic action.
Identifying care gaps along the HIV treatment failure cascade: A multistate analysis of viral load monitoring, re-suppression, and regimen switches in Zambia.
(2025-Sep) Sikombe, Kombatende; Le Tourneau, Noelle; Rice, Brian; Pry, Jake M.; Simbeza, Sandra; Beres, Laura K.; Sharma, Anjali; Mukamba, Njekwa; Wringe, Alison; Hargreaves, James R.; Mutale, Jacob; Bolton-Moore, Carolyn ; Sikazwe, Izukanji; Geng, Elvin; Mody, Aaloke
BACKGROUND: Timely response to treatment failure is critical for improved outcomes and viral re-suppression among people living with HIV, but care gaps along the treatment failure cascade can occur due to delays by both clients (e.g., retention and adherence) and health systems (e.g., fidelity to viral load [VL] monitoring guidelines). We used multistate analysis to identify drivers of implementation gaps in the treatment failure cascade, including time to HIV VL monitoring, re-suppression, and regimen switches, in Zambia. METHODS AND FINDINGS: We used national electronic HIV health records to identify adults on antiretroviral therapy (ART) for more than 6 months who experienced treatment failure (VL ≥ 1,000 copies/ml) at 24 clinics in Lusaka, Zambia, between August 2019 and November 2021. Using multistate analyses, we examined how care evolved after treatment failure, accounting for transitions across the treatment failure cascade over time, such as return visits, repeat VL testing, treatment interruptions (>60 days late for visit), and viral re-suppression. Analyses were stratified by ART regimen at cohort entry: tenofovir disoproxil fumarate/lamivudine or emtricitabine/dolutegravir TDF/XTC/DTG (TLD) and tenofovir disoproxil fumarate/lamivudine or emtricitabine/efavirenz TDF/XTC/EFV (TLE). We repeated analyses to assess switch to second-line therapy among those with consecutively unsuppressed VL test results who were due for regimen switch. Among 179,855 individuals on ART (143,857 with documented VL), 7,916 (4.4%) had a documented elevated VL and drug regimen at the time of treatment failure (52.3% female, median age was 36.7 years (IQR 29.9-43.6), median time on ART 3.3 years (IQR 1.7-6.6), 54.6% on TLD and 45.4% on TLE). Among those with treatment failure, 72.2% (CI 71.3, 73.0%) had returned to clinic 6 months after initial elevated VL was drawn. After one year, 70.1% (CI 69.3, 70.9%) had a repeat VL, 16.6% (CI 15.9, 17.2%) experienced treatment interruption, and 11.4% (CI 10.3, 12.4%) returned to care without repeat VL testing. Among those with a repeat VL, 85.0% (CI 83.9, 86.1%) on TLD and 58.2% (CI 56.8, 59.8%) on TLE had resuppressed. Among those due for second-line switch, 27.9% (CI 24.1, 31.5%) on TLD and 66.6% (CI 64.5, 68.9%) on TLE had changed regimens after one year while 52.4% on TLD had a third VL repeated prior to switch (CI 47.2, 57.4%) (68.0% CI 61.6, 75.2% suppressed of those with repeated VL) compared to 32.1% (CI 29.9, 34.1%) (40.7% CI 36.1, 45.4% suppressed) on TLE. This study was limited by the inability to capture all aspects of care delivery related to treatment failure, such as outreach, enhanced adherence counseling confirmation, and provider rationale for delayed VL rechecking. CONCLUSION: After treatment failure, we identified substantial delays in returning for adherence counseling, treatment interruptions, and missed opportunities in rechecking VL status or switching to second-line therapy in routine care in Zambia. Among those who did have VL tests rechecked, re-suppression rates were significantly higher among individuals on TLD compared to TLE. To optimize response and outcomes after treatment failure, strategies must prioritize and target both client and health systems behaviors to meet the care needs in the modern era of TLD.
Patients' Satisfaction with HIV Care Providers in Public Health Facilities in Lusaka: A Study of Patients who were Lost-to-Follow-Up from HIV Care and Treatment.
(2020-Apr) Mukamba, Njekwa; Chilyabanyama, Obvious N.; Beres, Laura K.; Simbeza, Sandra; Sikombe, Kombatende; Padian, Nancy; Holmes, Charles; Sikazwe, Izukanji; Geng, Elvin; Schwartz, Sheree R.
Prognosis among those who are HIV infected has improved but long-term retention is challenging. Health systems may benefit from routinely measuring patient satisfaction which is a potential driver of engagement in HIV care, but it is not often measured in Africa, and Zambia in particular. This study aims to internally validate a patient satisfaction tool, assess satisfaction among patients previously lost-to-follow up (LTFU) from HIV care in Lusaka province and to measure association between patient satisfaction with their original clinic and re-engagement in HIV care. A cross-sectional assessment of satisfaction was conducted by tracing sampled patients drawn from public health facilities. Our findings suggest that satisfaction tool, previously validated in USA, exhibits high internal consistency for measuring patient satisfaction in the Zambian health system. Patient satisfaction with healthcare providers is associated with re-engagement in HIV care. Future interventions on patient-centred care are likely to optimize and support retention in care.