“…Poor retention is a problem because longer time spent in weight-loss programs is associated with better weight outcomes ( Jiandani et al, 2016 ); poor retention may distort study findings, likely biasing toward program effectiveness, and require better retention strategies ( Rae et al, 2013 ). Retention in weight-loss programs is generally associated with older age ( Leahey et al, 2010 , Jiandani et al, 2016 , Jiang et al, 2016 , Babatunde et al, 2017 , Burgess et al, 2017 , Leung et al, 2017 , Stoutenberg et al, 2017 , Alexander et al, 2018 , Tomioka et al, 2019 ), though some studies have found no such association ( Moroshko et al, 2011 , Latner and Ciao, 2014 ). Retention rates have been found to be higher among females ( Jiang et al, 2016 ), but also among males ( Burgess et al, 2017 ) or not associated with gender ( Moroshko et al, 2011 , Stoutenberg et al, 2017 ).…”