Examination of a day programme for eating disorders: impact on 3-month follow-up by psychiatric comorbidity.

Objective: The two aims of this preliminary investigation were to use a case series design to examine outcomes of a day programme (DP) for eating disorders and to investigate whether the presence of baseline psychiatric comorbidities moderated outcomes 3 months after discharge.

Method: Linear mixed modelling was used to investigate changes over time in the 91 participants who had commenced the DP by April 2019; 87 (96%) female, 61 (67%) with a DSM-5 diagnosis of anorexia nervosa.

Results: Six of our seven outcome variables (dietary restraint; concern over weight, eating and shape; clinical impairment; and psychological distress) showed moderate to large effect size improvements from baseline to follow-up.