“…Of the studies that reported retention, four reported 100% retention n (Baron and Faubert 2005;Lee et al 2013;Sousa et al 2012;Tsang et al 2009aTsang et al , b, 2010Tsang et al , 2013, while the remaining three studies reported a retention rate of 62% (Terjestam et al 2010), 75% (Stephens et al 2008), or 87% (Singh-Grewal et al 2007. Of the studies with reported completion rates, four reported 100% completion (Baron and Faubert 2005;Lee et al 2013;Sousa et al 2012;Tsang et al 2009aTsang et al , b, 2010Tsang et al , 2013 while one reported 87% (Singh-Grewal et al 2007) and another 75% (Stephens et al 2008). Adverse events were reported for two studies, with none reported in the Tai Chi or Qigong arm (Stephens et al 2008;Tsang et al 2009aTsang et al , b, 2010Tsang et al , 2013, while Tsang noted adverse events in the comparator arm (Kung Fu) (Tsang et al 2009a(Tsang et al , b, 2010(Tsang et al , 2013.…”