“…The earliest EE was published in 1997 (Fontana & Rosenheck, 1997 ) and the most recent EE was published in 2019 (Aas et al, 2019 ) ( Table 1 ). Ten studies were conducted in the USA (Cohen et al, 2017 ; Domino et al, 2005 ; Fontana & Rosenheck, 1997 ; Gilbert, 2009 ; Greer et al, 2014 ; Le et al, 2014 ; Morland et al, 2013 ; Painter et al, 2017 ; Slade et al, 2017 ; Wood et al, 2009 ), three in Australia (Gospodarevskaya & Segal, 2012 ; Issakidis et al, 2004 ; Mihalopoulos et al, 2015 ) and five in Europe (Aas et al, 2019 ; Chang et al, 2018 ; Macdonald et al, 2016 ; McCrone et al, 2005 ; Shearer et al, 2018 ). The sample size of the studies ranged from N = 29 (Shearer et al, 2018 ) to N = 2,006 (Domino et al, 2005 ) in trial-based EEs.…”