“…Forty-four trials potentially had relevant information, and finally 19 trials ( n = 1956) were found to have outcomes of interest. These 19 trials were reported in 20 studies (Table 1) (Bishop et al, 2005; Blumenthal et al, 2005; Dao et al, 2011; del Pino, Gaos, Dorta, & Garcia, 2005; Fernandes, McIntyre, Coelho, Prata, & Maciel, 2017; Freedland et al, 2009; Karlsson et al, 2007; Lv et al, 2016; Merswolken, Siebenhuener, Orth-Gomér, Zimmermann-Viehoff, & Deter, 2011; Michalsen et al, 2005; Mohammadi et al, 2018; Murphy et al, 2013; Nikrahan et al, 2016; Nyklíček, Dijksman, Lenders, Fonteijn, & Koolen, 2014; O'Neil et al, 2014; 2015; Rakowska, 2015; Sanjuan et al, 2016; Sebregts, Falger, Appels, Kester, & Bär, 2005; Trzcieniecka-Green & Steptoe, 1996). The results of one trial were reported separately in two publications (O'Neil et al, 2014, 2015).…”