“…In the majority of the studies, the groups were similar at baseline, and the researchers mentioned the number of dropouts. Nearly half of the studies randomized treatment (Apsche, Bass, & Houston, 2006;Cooney et al, 2012;Cwik, 2006;Goldstein et al, 2015;Mehlum et al, 2014) and described the calculation of statistical power (Cwik, 2006;Katz, Cox, Gunasekara, & Miller, 2004;Lenz & Del Conte, 2018;Wasser, Tyler, McIlhaney, Taplin, & Henderson, 2008;Wineman, 2009). Only two conducted an analysis on the intent-to-treat sample (Goldstein et al, 2015;Mehlum et al, 2014).…”