Participants who reported ever being on MMT during the last six months at any assessment were included in the study. We compared factors associated with being a “MMT continuer” versus a “MMT discontinuer”. “MMT continuers” were defined as those who reported currently being on MMT at the time of study assessment. “MMT discontinuers” were defined as those who reported being on MMT in the last study assessment but reported not currently being on MMT at the time of study assessment. Of note, some participants may have discontinued MMT more than once during the study period. Baseline characteristics of the “MMT discontinuers” were analyzed only for those who reported discontinuing MMT in the last 6 months at the time of baseline study assessment.
