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Copyright of International Journal of Eating Disorders is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

ABSTRACT Objective Method Results Discussion Prevention programs for eating disorders (EDs) and high body index mass (BMI) have the potential to reduce the onset of these interconnected public health concerns. However, it remains unclear whether routine implementation of such programs would be cost‐effective. This study aims to determine the cost‐effectiveness of an intervention that aims to prevent both ED and high BMI.A Markov model was developed to evaluate the incremental cost‐effectiveness of a targeted school‐based program, Healthy Weight, that aims to prevent both EDs and high BMI among Australian adolescents with body image concerns (aged 15–18 years), versus a “no intervention” comparator. A cost‐utility analysis was conducted from a “healthcare and education” sector perspective with costs (measured in 2019 Australian dollars) and health impacts modeled over the lifetime of the target population. An incremental cost‐effectiveness ratio (ICER), expressed as cost per health‐adjusted life year (HALY) gained, was calculated. Sensitivity analyses were done to test model assumptions.The mean intervention cost and HALYs gained were AUD$2.13 million (95% CI, AUD$1.83–2.43 million) and 146 (95% CI, 90–209), respectively. With healthcare cost‐savings (AUD$3.97 million) included, the intervention was predicted to be cost‐saving (AUD$1.83 million; 95% CI, AUD$0.51–3.21 million). Primary findings were robust to extensive sensitivity analyses.The Healthy Weight intervention is likely to represent good value‐for‐money. To ensure the successful implementation of this program at the population level, further research on its feasibility and acceptability among schools and the wider community is required. [ABSTRACT FROM AUTHOR]