LAUSR

Healthcare expenditures for HIV care pose a major economic burden on households in sub-Saharan Africa. While immediate initiation of antiretroviral therapy (ART) for all HIV-positive patients has important health benefits, it is unknown how this profound change in HIV care provision will affect patients' healthcare expenditures. This study, therefore, aims to determine the causal impact of immediate ART initiation on patients' healthcare expenditures in Eswatini. This stepped-wedge cluster-randomised controlled trial enrolled fourteen public-sector healthcare facilities in rural and semi-urban Eswatini. Facilities were randomly assigned to transition at one of seven time points from the standard of care (ART eligibility at CD4 counts of < 500 cells/mm3) to the immediate ART for all intervention (EAAA). The primary outcome was total patient-borne healthcare expenditures during the preceding 12 months. We used mixed-effects negative binomial regressions adjusted for secular trends and clustering at the facility level. 2261 participants were interviewed over the study period. Participants in the EAAA phase reported a 45% decrease (RR: 0.55, 95% CI: 0.39, 0.77, p < 0.001) in their total past-year healthcare expenditures compared to the standard-of-care phase. Patients' healthcare expenditures for private and traditional healthcare providers were 93% (RR 0.07, 95% CI: 0.01, 0.77, p < 0.001) lower in the EAAA than the standard of care phase. Self-reported health status was similar between study phases. Despite a higher frequency of HIV care visits for newly initiated ART patients, immediate ART initiation lowered patients' healthcare expenditures because they sought less care from private and traditional healthcare providers. This study adds an important economic argument to the World Health Organisation's recommendation for countries to abolish CD4-count-based eligibility thresholds for ART. This is the first experimental study to examine the impact of immediate ART initiation on patients’ healthcare expenditures and thus obtain a causal estimate of the economic benefits of immediate ART. Immediate ART initiation in Eswatini reduced HIV patients’ healthcare expenditures, at least partially through decreasing care-seeking from traditional and private healthcare providers.