This study examines medical admission patterns among adolescents with restrictive eating disorders before and after the onset of the COVID-19 pandemic. What's Known on This SubjectLimited data suggest the COVID-19 pandemic has been associated with worsening mental health outcomes, including worsening symptoms of eating disorders. Little is known about the potential effects of the pandemic on medical admission patterns among adolescents with eating disorders. What This Study AddsMedical admissions among adolescents with eating disorders at our institution increased significantly during the COVID-19 pandemic, with the number of admissions during the first twelve months of the pandemic more than double the mean for the previous three years.

Objective Though virtual outpatient psychotherapy for eating disorders is likely effective, less is known about virtual higher levels of care. The current study examined the clinical outcomes of a family‐based virtual intensive outpatient program (vIOP) for youth with eating disorders which was developed in response to the COVID‐19 pandemic, compared to the same institution's in‐person partial hospital program (PHP). Methods Treatment outcomes were assessed via chart review in 102 patients between the ages of 9–23 (M = 15.2, SD = 2.5) who were predominantly cisgender female (84.3%) and primarily diagnosed with anorexia nervosa (64.7%) or atypical anorexia (23.5%). Participants were either treated in the in‐person PHP before the pandemic (n = 49) or the vIOP during the pandemic (n = 53). Percent expected body weight (%EBW) was examined at baseline, end of treatment, 3‐months post‐treatment, and 6‐months post‐treatment, as well as the frequency of medical, psychiatric, and residential admissions before, during, and after vIOP or PHP participation. Results Linear mixed models demonstrated no effect of treatment modality (in‐person versus virtual) on %EBW over time. The duration of the vIOP was, on average, 12 calendar days longer, though the amount billed for the vIOP was lower. Survival analyses and Cox regression models did not suggest differences in the frequency of hospital and residential treatment admissions during treatment (vIOP: 9.4%, PHP: 10.0%) or post‐treatment (vIOP: 15.0%, PHP: 10.2%). Discussion Findings support virtual family‐based programs as suitable alternatives to in‐person treatment and underscore the potential cost‐effectiveness of a family‐based IOP versus PHP. Public Significance This study demonstrates that a virtual, family‐based, intensive outpatient program for youth with eating disorders had similar treatment outcomes to an in‐person partial hospitalization program. Specifically, the virtual and in‐person programs had similar weight restoration outcomes and rates of medical, psychiatric, or residential treatment admissions during or after treatment initiation. Findings support the use of virtual treatment, even for youth requiring a high level of intervention.

Objective: Improved treatment outcome in family-based treatment (FBT) for anorexia nervosa (AN) is predicted by weight gain occurring early in the course of treatment (i.e., about 4 lbs by week 4). Although prior work suggests that early weight gain in higher levels of care (e.g., partial hospitalization programs [PHP]) predicts weight restoration at discharge, no study has examined the specific rate of gain within FBT-informed PHP programs that best predicts treatment response. Method: This study examined rate of weight gain in pounds and percent expected body weight (EBW) that predicts positive outcome in 70 patients (M age = 15.49 years, SD = 2.56) with AN who were enrolled in a family-based PHP. Results: Receiver operator characteristic analyses demonstrated that changes in % EBW during weeks 2-5 were more useful than changes in weight in predicting positive outcome. Gaining at least 8.9 pounds or over 8% of EBW in the first 4 weeks of treatment significantly predicted positive outcome. Discussion: Findings suggest that positive outcome in an FBT-informed PHP is predicted by rapid weight gain in the initial weeks of treatment. Research is needed to identify specific family and patient characteristics that facilitate weight gain and to develop corresponding interventions to improve outcome. K E Y W O R D S adolescent, anorexia nervosa, body weight, treatment outcome, weight gain

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