“…Similarly, when examining the association between OCD severity and family accommodation within groups of children (7-12 years) with OCD, strong significant associations have been found (N = 15, FAS Total d = 7.84, FAS Avoidance of Triggers d = 3.37, Bipeta et al, 2013;N = 24, FAS total d = 1.81, FAS Participation d = 1.19, FAS Modification d = 1.58, Wu et al, 2014). Furthermore, although no eligible treatment studies have statistically examined the association between changes in children's OCD severity and changes in family accommodation across treatment, studies have consistently shown significant improvements in both children's OCD severity and family accommodation from preto post-treatment, including following internet-delivered CBT (N = 11, 8-11 Selles et al, 2018a); parent-led CBT (N = 6, 10-13 years, Lebowitz, 2013;N = 20, 5-7 years, Rosa-Alcázar et al, 2017;N = 44, 5-7 years, Rosa-Alcázar et al, 2019); and family-based CBT treatments (N = 7, 10-13 years, CY-BOCS d = À3.62, Waters et al, 2001;Rosa-Alcázar et al, 2017;Rosa-Alcázar et al, 2019), with some studies showing maintenance of these effects at 1-month (CY-BOCS d = À0.05, CY-BOCS-PR d = À0.09, FAS d = À0.23, Selles et al, 2018a) and 3-month followup periods (CY-BOCS d = À0.30, OCI-CV d = À0.03, ChOCI-R-P d = 0.06, FAS d = À0.04, Aspvall et al, 2018;Rosa-Alcázar et al, 2019;Rosa-Alcázar et al, 2017). Furthermore, Whiteside et al (2014) Siblings' behaviours.…”