“…Previous meta-analyses have not been unanimous but have pointed in different directions, possibly due to lack of power because of low numbers of included studies. Despite higher power in this meta-analysis, the effect sizes found are not larger than those found in previously (Arends et al, 2012;Cochrane et al, 2017;Doki, Sasahara, & Matsuzaki, 2014;Meijer, Sluiter, & Frings-Dresen, 2005;Nieuwenhuijsen et al, 2014;Nigatu et al, 2016;Salomonsson, Hedman-Lagerlof, & Ost, 2018). It should be noted that most trials did not specifically target RTW which can be one explanation for the small ESs.…”