Outcomes of three universal eating disorder risk reduction programs by participants with higher and lower baseline shape and weight concern

About this resource

Objective: To investigate if baseline shape and weight concern (SWC) moderated outcomes in Prevention Across the Spectrum, a randomized-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). Moderation was explored by testing interaction effects for group (Media Smart; Life Smart; HELPP; Control) × moderator (SWC: higher-SWC; lower-SWC) × time (post-program; 6-month follow-up; 12-month follow-up), with baseline risk factor scores entered as covariates. Results: Moderation effects were found for shape concern, weight concern, eating concern, regular eating (i.e., meal skipping), physical activity, body dissatisfaction, dieting, and perfectionism. Post-hoc testing found eating concern at post-program was the only variable where higher-SWC Media Smart participants experienced a reduction in risk relative to controls. Both higher-SWC Life Smart and HELPP participants reported an increase in eating concern relative to controls and both groups were skipping more meals than controls at 12-month follow-up. Amongst lower-SWC participants, Media Smart was the only group to experience a benefit relative to controls (physical activity). Conclusions: This study highlights the need for moderator analyses to become more routinely conducted in universal trials, to ensure that participants across baseline risk levels are benefiting and not harmed from program participation. © 2016 Wiley Periodicals, Inc. (Int J Eat Disord 2017; 50:66–75)

AuthorWilksch, Simon M.; Paxton, Susan J.; Byrne, Susan M.; Austin, S. Bryn; O'Shea, Anne & Wade, Tracey D.
JournalInternational Journal of Eating Disorders
Volume50(1):66-75
Year2017

See also

Validity and utility of the current definition of binge eating

OBJECTIVE: Binge eating, a cardinal symptom of bulimia nervosa (BN) and binge eating disorder (BED), continues to pose challenges in terms of its definition and thus construct validity and clinical utility.

Read more

Eating Disorders in Australia

Click here to download full size

Read more

The ethics of neuromodulation for anorexia nervosa: a focus on rTMS.

OBJECTIVE: Recently there has been emerging clinical and research interest in the application of deep brain stimulation (DBS) and repetitive transcranial magnetic stimulation (rTMS) to the treatment of anorexia nervosa (AN).

Read more

Population-based cost-offset analyses for disorder-specific treatment of anorexia nervosa and bulimia nervosa in Germany

Previous research has shown that anorexia nervosa (AN) and bulimia nervosa (BN) are expensive illnesses to treat.

Read more

Help us improve!

Give us feedback!

We will continue throughout 2020 to update and improve the NEDC website and welcome any feedback you may have on the site.

Provide feedback