Economic evaluation of Maternal Depression Treatment in HIV (M-DEPTH) for perinatal depression among women living with HIV in Uganda: a cost-effectiveness analysis.

abstractObjective: We conducted a cost-effectiveness analysis of an evidence-based collaborative care model for treatment of perinatal depression among women living with HIV in Uganda. Design: Maternal Depression Treatment in HIV (M-DEPTH) is a cluster randomised controlled trial implemented from July 2019 to August 2023, during which 391 pregnant women with mild-to-severe depressive symptoms were randomised to receive stepped care for depression (M-DEPTH: behavioural and pharmacological treatments) or care as usual (CAU: hospital referral for severe cases), at one of eight public health facilities in Uganda. Methods: We implemented time-driven, activity-based costing to determine the economic cost of M-DEPTH from a societal perspective, compared with CAU. Change in the prevalence of depressive disorder-from enrolment to 18 months postpartum-was quantified using the Patient Health Questionnaire, with depressive disorder assigned a disability weight according to the Global Burden of Disease project. Incremental cost-effectiveness ratios (ICERs) were expressed as cost per disability-adjusted life years (DALY) averted. Results: The estimated economic cost of M-DEPTH was US$128.82 per participant, compared with $1.53 per participant for CAU. At baseline, prevalence of depressive disorder did not differ according to treatment assignment. Remission of depressive disorder was more prevalent among those assigned to M-DEPTH-across all time periods, including 18-month follow-up (aOR: 0.09; 95% CI 0.05 to 0.16; p<0.001). This yielded an ICER of $397 per DALY averted, when limiting benefits to those accrued over the study period. Sensitivity analyses generated estimates ranging from $162 to $418 per DALY averted. Conclusions: M-DEPTH represents a financially feasible task-shifted model of evidence-based perinatal depression screening and treatment. The intervention is cost-effective at a willingness-to-pay threshold of less than half of median gross domestic product per capita in Uganda. Trial registration number: NCT03892915.