RESUMEN
Family therapy for eating disorders (ED) is well-established and represents the treatment choice for ED in children and adolescents according to guidelines, with cognitive behavior therapy (CBT) as a second line treatment. There is limited knowledge about how these treatments work in routine clinical care. The goal of the present meta-analysis is to investigate the effectiveness of family therapy and CBT for various EDs in children and adolescents when carried out in routine clinical care. Ovid MEDLINE, Embase OVID, and PsycINFO were searched for articles published until December 2023. The outcome of family therapy and CBT, methodological quality, risk of bias, and moderators of treatment outcome were examined and benchmarked by meta-analytically comparing with ED efficacy studies. Forty-four effectiveness studies comprising 3251 family therapy or CBT patients were included. Large to very large within-group effect sizes (ES) were found for ED-psychopathology (0.80) and weight measures for AN (1.64) at post treatment. The attrition rate was 15%. Risk of bias was considerable. Moderate to large ES were found for family therapy and CBT, respectively. The benchmarking analysis showed that effectiveness studies had comparable ESs to efficacy studies (0.80 and 0.84 for the ED-psychopathology at post treatment). The findings support family therapy and CBT for ED in children and adolescents as effective treatments when delivered in routine clinical care, with effects comparable with those found in efficacy studies. The evidence needs to be interpreted with caution because of the risk of bias in a high proportion of studies.PROSPERO [CRD42023441794].