There was no superiority of a specific approach .
Weight gains were more rapid in adolescents and inpatient treatment .
Background : The aim of the study was a systematic review of studies evaluating psychotherapeutic treatment approaches in anorexia nervosa and to compare their efficacy .
Weight gain was chosen as the primary outcome criterion .
We also aim ed to compare treatment effects according to service level ( inpatient vs. outpatient ) and age group ( adolescents vs. adults ) .
Does internet-based prevention reduce the risk of relapse for anorexia nervosa?
Technological advancements allow new approaches to psychotherapy via electronic media . The eating disorder literature currently contains no studies on internet intervention in anorexia nervosa ( AN ) . This study presents a RCT on an internet-based relapse prevention program ( RP ) over nine months after inpatient treatment for AN . The sample comprised 258 women , r and omized to the RP or treatment as usual ( TAU ) .  Expert- and self-ratings were evaluated by intent-to-treat analyses . Concerning age , age at onset and comorbidity , both groups were comparable at r and omization . During the RP , the intervention group gained weight while the TAU group had minimal weight loss .  RP completers gained significantly more body weight than patients in the TAU condition . Group-by-time comparisons for eating-related cognitions and behaviors and general psychopathology showed a significantly more favorable course in the RP program for " sexual anxieties " and " bulimic symptoms " ( interview ) , and " maturity fears " and " social insecurity " ( EDI-2 ) . General psychopathology showed no significant group-by-time interaction . Important factors for successful relapse prevention were adherence to the intervention protocol and increased spontaneity . Considering the unfavorable course and chronicity of anorexia nervosa ( AN ) , internet-based relapse prevention in AN following inpatient treatment appears a promising approach . Future internet-based programs may be further improved and enhanced
There was no superiority of a specific approach .
Weight gains were more rapid in adolescents and inpatient treatment .
Background : The aim of the study was a systematic review of studies evaluating psychotherapeutic treatment approaches in anorexia nervosa and to compare their efficacy .
Weight gain was chosen as the primary outcome criterion .
We also aim ed to compare treatment effects according to service level ( inpatient vs. outpatient ) and age group ( adolescents vs. adults ) .