Sensitivity Analyses
When all psychosocial characteristics were entered as continuous measures to univariate and multivariable analysis, results for the outcomes of self-reported adherence difficulties and virological failure remained essentially unchanged (Supplementary materials 2, 3). For suboptimal adherence as indicated by pill count < 95%, the associations in univariate and multivariable analysis with gender and household income remained consistent. However, the association with task-oriented coping remained present in univariate analysis but not in multivariable analysis. Instead, the multivariable analysis for this outcome revealed associations with health literacy and household family support (Supplementary materials 2, 3).Sensitivity analysis using a self-reported adherence variable that considers only short-term adherence demonstrated a prevalence of self-reported short-term non-adherence of 51.3% (235/458) versus a prevalence of 53.1% (243/458) for the definition of self-reported adherence difficulties that was used in the main analysis. Univariate associations and multivariable model results with this outcome were consistent with the results of the main analysis (Supplementary materials 4).