“…Naeem et al (2015) and Vohs et al (2018) fulfilled the fidelity criteria but included no follow-up; thus, the improvement of Enactment of Treatment Skills was not very clear.- Rehabilitation (RCTs): All included RCTs, which contain a rehabilitation program, fulfill the fidelity criteria. The RCTs include only a post-treatment evaluation but not a follow-up evaluation (Table 1) could have a better impact on the improvement of Enactment of Treatment Skills (Bechi et al, 2013; Bio & Gattaz, 2011; Byrne et al, 2013; Choi et al, 2018; Garrido et al, 2013; Gaudelus et al, 2016; Gharaeipour & Scott, 2012; Gil-Sanz et al, 2013; Gomar et al, 2015; Iwata et al, 2017; Kurtz et al, 2015; Ojeda et al, 2012; Palumbo et al, 2017; Pena et al., 2016; Rocha & Queiros, 2013; Sanchez et al, 2014; Sevos et al, 2018; Souto et al, 2018; Taylor et al, 2016; Thomas et al, 2018; Veltro et al, 2011).
- Case studies (CBT, MCT, MCTR, MERIT, and Rehabilitation): Balzan and Galletly (2015), Peyroux and Franck (2016), and Grant et al (2014) followed the fidelity criteria thoroughly.
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