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Shape and weight concern as a moderator of program outcomes from the Prevention Across the Spectrum RCT
Journal of Eating Disorders volume 3, Article number: O28 (2015)
To investigate if baseline shape and weight concern moderated outcomes in the Prevention Across the Spectrum trial, a randomised-controlled trial (RCT) of 3 school-based programs aimed at reducing eating disorder and obesity risk factors.
N = 1,316 Grade 7 and 8 girls and boys (M age = 13.21 years) across three Australian states were randomly allocated to: Media Smart; Life Smart; Helping, Encouraging, Listening and Protecting Peers Initiative (HELPP) or control (usual school class). Risk factors were measured at baseline, post-program (5-weeks later), and 6- and 12-month follow-up.
Moderation was indicated by significant interaction effects for group (Media Smart; Life Smart; HELPP; Control) X moderator (high shape and weight concern; low shape and weight concern) X time (post-program; 6-month follow-up; 12-month follow-up), with baseline entered as a covariate. Such effects were found for shape concern, weight concern, eating concern, regular eating, body dissatisfaction, and physical activity. Post-hoc testing found Media Smart participants with high baseline shape and weight concern experienced a reduction in risk at 12-month follow-up for 4 of the 6 variables.
This study shows it is possible for a school-based program to reduce eating disorder risk factors in participants with high baseline risk of an eating disorder.
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Wilksch, S., Wade, T., Paxton, S. et al. Shape and weight concern as a moderator of program outcomes from the Prevention Across the Spectrum RCT. J Eat Disord 3 (Suppl 1), O28 (2015). https://doi.org/10.1186/2050-2974-3-S1-O28
- Eating Disorder
- High Baseline
- Body Dissatisfaction
- Obesity Risk
- Weight Concern