Trial reportThe lancet. HIV2024
Impact of financial incentives on viral suppression among adults initiating HIV treatment in Tanzania: a hybrid effectiveness-implementation trial.
Trial report in The lancet. HIV, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT04201353 (Optimizing the Efficiency and Implementation of Cash Transfers to Improve Adherence to Antiretroviral Therapy, Phase II), which is not on this map. Cited by 6 papers, 1 of them a synthesis that pooled it.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Optimizing the Efficiency and Implementation of Cash Transfers to Improve Adherence to Antiretroviral Therapy, Phase II: Effectiveness Study
Who cites it
6 citing papers in PubMed, 1 synthesis or guideline pooled it.
- The effectiveness of monetary incentives in improving viral suppression, treatment adherence, and retention in care among the general population of people living with HIV: a systematic review and meta-analysis.AIDS research and therapy · 2025Pooled it
- How do repeated financial incentives affect HIV care-seeking behaviours over time? Evidence from a cluster-randomised controlled trial.BMJ global health · 2026Trial
- Scaling-up an mHealth system to deliver financial incentives to improve adherence to antiretroviral therapy in Tanzania.Implementation science communications · 2025Article
- CROI 2025: The Challenges of Sustaining Viral Suppression, Addressing Advanced HIV Disease, and Ending the HIV Epidemic Targets.Topics in antiviral medicine · 2025Review
- Adverse childhood experiences and disengagement from HIV care: a case-cohort study in Tanzania.AIDS research and therapy · 2025Article
- Evaluating the effect of interactive two-way texting on 6-month antiretroviral therapy outcomes: Findings from a randomized controlled trial in Lilongwe, Malawi.PLOS global public health · 2025Article
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Authors and funding
15 authors.
Funding
Abstract
backgroundSmall incentives could improve engagement in HIV care. We evaluated the short-term and longer-term effects of financial incentives for visit attendance on viral suppression among adults initiating antiretroviral therapy (ART) in Tanzania.
methodsIn a type 1 hybrid effectiveness-implementation study, we randomised (1:1) 32 primary care HIV clinics in four Tanzanian regions to usual care (control group) or the intervention (usual care plus ≤6 monthly incentives [22 500 Tanzanian Shillings, about US$10, each], conditional on visit attendance). Adults (aged ≥18 years) initiating ART (<30 days) who owned a mobile phone and had no plans to transfer to another facility were eligible. The primary outcome was retention on ART with viral suppression (<1000 copies per mL) at 12 months. Secondary outcomes included retention on ART with viral suppression at 6 months and viral suppression at 6 months and 12 months using a lower threshold (<50 copies per mL). Intent-to-treat analysis and a cluster-based permutation test were used to evaluate the effect of financial incentives on outcomes. This trial is registered with ClinicalTrials.gov, NCT04201353, and is completed.
findingsBetween May 28, 2021, and March 8, 2022, 1990 participants (805 male and 1185 female) were enrolled in the study. 1059 participants were assigned to the intervention group and 931 participants were assigned to the control group. Overall, 1536 (88%) participants at 6 months and 1575 (83%) at 12 months were on ART with viral suppression. At 12 months, 6 months after the intervention ended, 866 (85%) participants in the intervention group compared with 709 (81%) in the control group had viral loads less than 1000 copies per mL (adjusted risk difference [aRD] 4·4 percentage points, 95% CI -1·4 to 10·1, permutation test p=0·35). At 6 months, 858 participants (90%) in the intervention group were on ART with viral loads less than 1000 copies per mL compared with 678 (86%) in the control group (aRD 5·1 percentage points, 95% CI 1·1 to 9·1, permutation test p=0·06). Effects were larger at 6 months and 12 months with the lower threshold for viral suppression, and there was significant effect heterogeneity by region. Adverse events included 106 deaths (56 in the control group and 50 in the intervention group), none related to study participation.
interpretationShort-term incentives for visit attendance had modest, short term benefits on viral suppression and did not harm retention or viral suppression after discontinuation. These findings suggest the need to understand subgroups who would most benefit from incentives to support HIV care.
fundingNational Institute of Mental Health. TRANSLATION: For the Swahili translation of the abstract see Supplementary Materials section.
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