“…We discovered that most (56.5%, k = 13) of these studies focused only on improving medication adherence. Only one study [45] focused on linkage to care, three studies [26, 46, 47] focused on care retention, and another six studies [19–21, 30, 47, 48] focused on multiple outcomes related to CoC. All of the eHealth interventions using knowledge also employed other mechanisms of change except for four studies [46, 47, 49, 50].…”