{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,3]],"date-time":"2026-07-03T02:06:55Z","timestamp":1783044415113,"version":"3.54.6"},"reference-count":25,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2013,9,6]],"date-time":"2013-09-06T00:00:00Z","timestamp":1378425600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Intl J Eating Disorders"],"published-print":{"date-parts":[[2014,1]]},"abstract":"<jats:title>ABSTRACT<\/jats:title><jats:sec><jats:title>Objective<\/jats:title><jats:p>DSM\u20105 anorexia nervosa (AN) criteria include several changes that increase reliance on clinical judgment. However, research contexts require operational definitions that can be applied reliably and that demonstrate validity. The present study evaluated different operational definitions for DSM\u20105 AN.<\/jats:p><\/jats:sec><jats:sec><jats:title>Method<\/jats:title><jats:p>DSM\u20105 AN criteria were applied to diagnostic interview data from 364 women varying two features: threshold for determining low weight for Criterion A (body mass index [BMI] &lt;17.0 kg\/m<jats:sup>2<\/jats:sup> vs. &lt;18.5 kg\/m<jats:sup>2<\/jats:sup>) and explicit endorsement of weight phobia (Criterion B explicit vs. inferred). Resulting groups of individuals with DSM\u20105 AN were compared on estimated frequency. In addition, AN groups were compared to non\u2010eating disorder controls and individuals with an other specified feeding or eating disorder (OSFED) on external validators.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>All operational DSM\u20105 definitions produced higher lifetime frequency estimates than reported for DSM\u2010IV AN, with a particularly large increase associated with the broadest definition. All definitions produced significant differences in comparison to controls on external validators that were associated with medium to large effect sizes. Only definitions that required a lower weight threshold or explicit endorsement of weight phobia demonstrated significant differences compared to OSFED on external validators, and these were of small effect size. The specific combination of BMI &lt;18.5 kg\/m<jats:sup>2<\/jats:sup> with inferred weight phobia exhibited few meaningful distinctions from the OSFED group.<\/jats:p><\/jats:sec><jats:sec><jats:title>Discussion<\/jats:title><jats:p>To balance inclusivity, syndromal reliability, and validity, an operational definition for DSM\u20105 AN in research contexts should define low weight as BMI &lt;18.5 kg\/m<jats:sup>2<\/jats:sup> and require measurable rather than inferred weight phobia. \u00a9 2013 Wiley Periodicals, Inc. 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