The effect of demand-side financial incentives for increasing linkage into HIV treatment and voluntary medical male circumcision: A systematic review and meta-analysis of randomised controlled trials in low- and middle-income countries

Abstract

IntroductionLinkage to HIV treatment is a vital step in the cascade of HIV services and is critical to slowing down HIV transmission in countries with high HIV prevalence. Equally, linkage to voluntary medical male circumcision (VMMC) has been shown to decrease HIV transmission by 60% and increasing numbers of men receiving VMMC has a substantial impact on HIV incidence. However, only 48% of newly diagnosed HIV positive people link to HIV treatment let alone access HIV prevention methods such as VMMC globally.MethodsA systematic review investigating the effect of demand-side financial incentives (DSFIs) on linkage into HIV treatment or VMMC for studies conducted in low- and middle-income countries. We searched the title, abstract and keywords in eight bibliographic databases: MEDLINE, EMBASE, Web of Science, Econlit, Cochrane, SCOPUS, IAS Conference database of abstracts, and CROI Conference database of abstracts. Searches were done in December 2016 with no time restriction. We fitted random effects (RE) models and used forest plots to display risk ratios (RR) and 95% CIs separately for the linkage to VMMC outcome. The RE model was also used to assess heterogeneity for the linkage to HIV treatment outcome.ResultsOf the 1205 citations identified from searches, 48 full text articles were reviewed culminating in nine articles in the final analysis. Five trials investigated the effect of DSFIs on linkage to HIV treatment while four trials investigated linkage to VMMC. Financial incentives improved linkage to HIV treatment in three of the five trials that investigated this outcome. Significant improvements were observed among postpartum women RR 1.26 (95% CI: 1.08; 1.48), among people who inject drugs RR 1.42 (95% CI: 1.09; 1.96), and among people testing at the clinic RR 1.10 (95% CI: 1.07; 1.14). One of the two trials that did not find significant improvement in linkage to ART was among people testing HIV positive in clinics RR 0.96 (95% CI: 0.81; 1.16) while the other was among new HIV positive individuals identified through a community testing study RR 0.82 (95% CI: 0.56; 1.22).We estimate an average 4-fold increase in the uptake of circumcision among HIV negative uncircumcised men from our fitted RE model with overall RR 4.00 (95% CI: 2.17; 7.37). There was negligible heterogeneity in the estimates from the different studies with I-squared = 0.0%; p = 0.923.ConclusionsOverall, DSFIs appeared to improve linkage for both HIV treatment and VMMC with greater effect for VMMC. Demand-side financial incentives could improve linkage to HIV treatment or VMMC in low- and middle-income countries although uptake by policy makers remains a challenge.

Economic compensation interventions to increase uptake of voluntary medical male circumcision for HIV prevention: A systematic review and meta-analysis

“…In cases where effects were not statistically significant, they generally showed trends in a positive direction. This overall positive effect of economic compensation interventions on VMMC uptake is encouraging and in line with findings of previous reviews [9][10][11][12]. However, while the relative effects were often appreciable, the overall uptake of VMMC in these studies was low, and the absolute differences between groups were small.…”

“…travel to the circumcision facility or lost wages from time off work), or that provide the opportunity to earn such compensation in the form of lotteries or other systems. Such interventions have been variously termed economic compensation interventions, financial incentives, or demand-side financial incentives [10]. We focused on potential VMMC clients, and thus excluded interventions that focused on incentives for health workers or for the health system.…”

“…Electronic databases were searched from January 1, 1990, through May 31, 2018. We searched the bibliographies of all studies included in the review and of several related reviews [9,10,20]. Further, selected experts in the field-specifically, members of the WHO Guideline Development Group for Medical Male Circumcisionwere asked to suggest additional articles not identified through other search methods.…”

“…Several recent reviews have considered economic compensation interventions as one strategy for increasing VMMC uptake in sub-Saharan Africa [6,[9][10][11][12]. These reviews generally found that such interventions may help to increase VMMC uptake, particularly when they address specific barriers, but evidence was limited.…”

“…These reviews generally found that such interventions may help to increase VMMC uptake, particularly when they address specific barriers, but evidence was limited. Economic compensation, or financial incentives, have been explored for a range of HIV-related behaviors, including sexual or drug use behaviors related to HIV prevention [12,13], HIV testing [12,14], linkage to or engagement in HIV treatment [10,12,14,15], and adherence to antiretroviral therapy [12,15,16]. These interventions occur within a broader social and health system context, where there may be economic incentives for other health-related behaviors (for example, prenatal care, infant vaccinations, or insecticide-treated bednets) [17].…”