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Behav Res Ther. 2014 Jan;52:64-71. doi: 10.1016/j.brat.2013.11.004. Epub 2013 Dec 3.

Depression as a moderator of benefit from Media Smart: a school-based eating disorder prevention program.

Author information

1
School of Psychology, Flinders University, PO Box 2100, Adelaide, SA 5001, Australia. Electronic address: simon.wilksch@flinders.edu.au.
2
School of Psychology, Flinders University, PO Box 2100, Adelaide, SA 5001, Australia.

Abstract

OBJECTIVE:

To investigate if baseline depression moderated response to Media Smart, an 8-lesson school-based program previously found to achieve a long-term risk reduction effect in young adolescents.

METHOD:

540 Grade 8 students (M age = 13.62 years, SD = .37) from 4 schools participated with 11 classes receiving the Media Smart program (126 girls; 107 boys) and 13 comparison classes receiving their normal lessons (147 girls; 160 boys). Shape and weight concern, media internalization, body dissatisfaction, dieting, ineffectiveness, and perceived pressure were the outcome variables.

RESULTS:

Moderation was indicated by significant interaction effects for group (Media Smart; Control) × moderator (high depression; low depression) × time (post-program; 6-month follow-up; 2.5-year follow-up), with baseline entered as a covariate. Such effects were found for shape and weight concern, media internalization, body dissatisfaction, ineffectiveness and perceived pressure. Post-hoc testing found high depression Media Smart participants scored significantly lower than their control counterparts at post-program on shape and weight concern, media internalization and dieting, whereas low depression Media Smart participants scored significantly lower on shape and weight concern at 2.5-year follow-up.

DISCUSSION:

Media Smart achieved a reduction in eating disorder risk factors for high-depression participants and a reduced rate of growth in risk factor scores for low-depression participants. Trial registry name: Australian New Zealand Clinical Trials Registry. URL: http://www.anzctr.org.au. Registration identification number: ACTRN12608000545369.

KEYWORDS:

Depression; Eating disorders; Moderator; Prevention; Risk factors

PMID:
24342265
DOI:
10.1016/j.brat.2013.11.004
[Indexed for MEDLINE]

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