“…Ten published articles were included in the review. These RCTs evaluated a range of formats of CBT, including three of individual CBT (Barrett et al, 1996;Silk et al, 2018;Suveg et al, 2018), two of group CBT (Arendt et al, 2016;Shortt et al, 2001), two of individual or group CBT (Villabo et al, 2018;Wergeland et al, 2014;Wergeland et al, 2016), two of parent-delivered CBT (Creswell et al, 2017;Thirlwall et al, 2013;Thirlwall et al, 2017), and one of internetdelivered CBT (Stjerneklar et al, 2019). Sessions varied in length from 20 min telephone calls (30 min online sessions) in Stjerneklar et al (2019) to 2 hours (Arendt et al, 2016), with an average session length of 59 min (SD = 33.71) across the seven studies which reported this information.…”