“…18,19 Medication adherence was the primary outcome in 16 studies 18,[20][21][22]24,30,31,40,43,44,[47][48][49]51,53,55 and the secondary outcome in 12 studies. 19,26,[32][33][34][35][36][37]39,50,52,54 In 12 studies, there was no specified outcome. 23,25,[27][28][29]38,41,42,45,46,56,57 Follow-up varied from 1 to 24 months, 24,51 in which 6 months was the most common.…”