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  • Oral presentation
  • Open Access

Shape and weight concern as a moderator of program outcomes from the Prevention Across the Spectrum RCT

  • 1Email author,
  • 1,
  • 2,
  • 3 and
  • 4, 5
Journal of Eating Disorders20153(Suppl 1):O28

https://doi.org/10.1186/2050-2974-3-S1-O28

Published: 23 November 2015

Keywords

  • Eating Disorder
  • High Baseline
  • Body Dissatisfaction
  • Obesity Risk
  • Weight Concern

Objective

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.

Method

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.

Results

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.

Discussion

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.

Authors’ Affiliations

(1)
School of Psychology, Flinders University, Australia
(2)
School of Psychological Science, La Trobe University, Australia
(3)
School of Psychology, University of Western Australia, Australia
(4)
Boston Children's Hospital, Australia
(5)
Harvard Medical School & Harvard School of Public Health, Australia

Copyright

© Wilksch et al. 2015

This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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