Clinical guidelines recommend outpatient care for the majority of people with an eating disorder. The optimal use of inpatient treatmentor combination of inpatient and partial hospital care is disputed and practice varies widely.
To assess the effects of treatment setting (inpatient, partial hospitalisation, or outpatient) on the reduction of symptoms and increase in remission rates in people with:1. Anorexia nervosa and atypical anorexia nervosa;2. Bulimia nervosa and other eating disorders.
We searched Ovid MEDLINE (1950- ), Embase (1974- ), PsycINFO (1967- )and the Cochrane Central Register of ControlledTrials (CENTRAL) to 2 July 2018. An earlier search of these databases was conducted via the Cochrane Common Mental DisordersControlled Trial Register (CCMD-CTR) (all years to 20 November 2015). We also searched the WHO International Clinical TrialsRegistry Platform and ClinicalTrials.gov (6 July 2018). We rana forward citation search on the Web of Science to identify additional reports citing any of the included studies, and screened reference lists of included studies and relevant reviews identified during our searches.
We included randomised controlled trials that tested the efficacy of inpatient, outpatient, or partial hospital settings for treatment ofeating disorder in adults, adolescents, and children, whose diagnoses were determined according to the DSM-5, or other internationally accepted diagnostic criteria. We excluded trials of treatment setting for medical or psychiatric complications or comorbidities (e.g.hypokalaemia, depression) of an eating disorder.
Data collection and analysis
We followed standard Cochrane procedures to select studies, extract and analyse data, and interpret and present results. We extracted data according to the DSM-5 criteria. We used the Cochrane tool to assess risk of bias. We used the mean (MD) or standardised mean difference (SMD) for continuous data outcomes, and the riskratio (RR) for binary outcomes. We included the 95% confidenceinterval (CI) with each result. We presented the quality of the evidence and estimate of effect for weight or body mass index (BMI)and acceptability (number who completed treatment), in a ’Summary of findings’ table for the comparison for which we had sufficient data to conduct a meta-analysis.
We included five trials in our review. Four trials included a total of 511 participants with anorexia nervosa, and one trial had 55 participants with bulimia nervosa. Three trials are awaiting classification, and may be included in future versions of this review. We assessed a risk of bias from lack of blinding of participants and therapists in all trials, and unclear risk for allocation concealment and randomisation in one study.We had planned four comparisons, and had data for meta-analyses for one. For anorexia nervosa, there may be little or no difference between specialist inpatient care and active outpatient or combined brief hospital and outpatient care in weight gain at 12 months after the start of treatment (standardised mean difference (SMD) -0.22, 95% CI -0.49 to 0.05; 2 trials, 232 participants; low-quality evidence). People may be more likely to complete treatment when randomised to outpatient care settings, but this finding is very uncertain (risk ratio (RR) 0.75, 95% CI 0.64 to 0.88; 3 trials, 319 participants; very low-quality evidence). We downgraded the quality of the evidence for these outcomes because of risks of bias, small numbers of participants and events, and variable level of specialistexpertise and intensity of treatment.We had no data, or data from only one trial for the primary outcomes for each of the other three comparisons.No trials measured weight or acceptance of treatment for anorexia nervosa, when comparing inpatient care provided by a specialist eating disorder service and health professionals and a waiting list, no active treatment, or treatment as usual.There was no clear difference in weight gain between settings,and only slightly more acceptance for the partial hospital setting overspecialist inpatient care for weight restoration in anorexia nervosa. There was no clear difference in weight gain or acceptability of treatment between specialist inpatient care and partial hospital care for bulimia nervosa, and other binge eating disorders.
There was insufficient evidence to conclude whether any treatment setting was superior for treating people with moderately severe (or less) anorexia nervosa, or other eating disorders.More research is needed for all comparisons of inpatient care versus alternate care.
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