The role of self-esteem in the treatment of patients with anorexia nervosa - A systematic review and meta-analysis.

OBJECTIVE

We aimed to provide a comprehensive overview of the role of self-esteem in the treatment of patients with anorexia nervosa (AN). Specifically, our objectives were to investigate the differences in self-esteem between individuals with AN and healthy controls, or individuals with other eating disorders, and to examine self-esteem as an outcome, predictor, moderator, and mediator in AN treatment.

METHOD

The databases PsycINFO, PSYNDEXplus, Ovid MEDLINE®, and ProQuest were searched for studies published from 1990 to 2018. To estimate aggregated effect sizes, we performed random-effects meta-analyses.

RESULTS

A screening of 1,596 abstracts and 203 full-texts identified 68 relevant publications. Results suggest a significantly lower global self-esteem in individuals with AN than in healthy controls (d = -1.90, p < .001). In contrast, global self-esteem of AN and bulimia nervosa (BN) patients was found to be comparable (d = 0.05, p = .529). It might be specific to AN patients that negative self-evaluations may not affect scholastic and professional abilities. Significantly moderate self-esteem increases were observed in treated AN patients at the end of treatment (d = 0.56, p < .001), short-term (d = 0.50, p < .001), and long-term (d = 0.75, p < .001) follow-up. Self-esteem did not predict end of treatment remission-or weight-related outcome and treatment dropout. However, small to moderate predictive effects were detected on short-term (r = .15, p = .007) and long-term remission or weight (r = .33, p = .017). Finally, first indications point to self-esteem as a mediator in adult AN inpatient treatment.

DISCUSSION

The review provides insights relevant for theory, research, and practice. Implications concern the overall support for transdiagnostic approaches and the recommendation to consider low initial self-esteem for decisions on after-care.