Rate of Inpatient Weight Restoration Predicts Outcome in Anorexia Nervosa
ABSTRACT To examine weight restoration parameters during inpatient treatment as predictors of outcome in anorexia nervosa (AN).
Adolescent and adult females admitted for inpatient eating disorder treatment were recruited for an ongoing longitudinal study. This analysis examined several weight restoration parameters as predictors of clinical deterioration after discharge among participants with AN.
Rate of weight gain was the only restoration parameter that predicted year 1 outcome. Clinical deterioration occurred significantly less often among participants who gained >or=0.8 kg/week (12/41, 29%) than those below this threshold (20/38, 53%) (chi(2) = 4.37, df = 1, p = .037) and remained significant after adjustment for potential confounders.
Weight gain rate during inpatient treatment for AN was a significant predictor of short-term clinical outcome after discharge. It is unclear whether weight gain rate exerts a causal effect or is rather a marker for readiness to tolerate weight restoration and engage in the recovery process.
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ABSTRACT: This study investigated changes and predictors during inpatient treatment of 55 adult in a transdiagnostic sample of patients with eating disorders. Patients were assessed at admission and discharge with the Body Attitude Test (BAT), Symptom Check List 90 Revised, Circumplex of Interpersonal Problems, Body Mass Index (BMI) and Eating Disorder Inventory 2 (EDI-2). Significant changes were found in all measures. Regression analyses showed that BAT changes during treatment were the strongest predictor of EDI-2 changes. No predictors of changes in BMI were found. Improvement of body image is important for the efficacy of inpatient treatment.Eating disorders 07/2012; 20(4):261-75. DOI:10.1080/10640266.2012.689205
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ABSTRACT: Previous studies have documented that weight suppression (a person's highest adult weight minus current weight) predicts weight gain and disordered eating symptoms during treatment of bulimia spectrum disorders, but no research has examined weight suppression in individuals with anorexia nervosa (AN). Thus, this study sought to characterize weight suppression in a large sample of patients with AN (N = 185), and to evaluate whether weight suppression at admission for intensive behavioral treatment predicts weight gain and clinical outcomes at discharge. Weight suppression varied from 0 kg to 78 kg (M [SD] = 17.1 [10.8] kg) in AN patients. Higher levels of weight suppression predicted greater total weight gain, a faster rate of weight gain, and bulimic symptoms during intensive treatment even after controlling for body mass index on admission, length and type of intensive treatment received, restricting versus binge-eating/purging AN subtype, and other predictors of study outcomes. These findings converge with previous research documenting the clinical significance of weight suppression in the treatment of eating disorders. Future work is needed to replicate the current findings, and examine whether weight suppression predicts the course of AN following discharge from intensive treatment.Behaviour Research and Therapy 02/2012; 50(4):266-74. DOI:10.1016/j.brat.2012.02.006 · 3.85 Impact Factor