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This study evaluated potential differences in ED pathology, psychiatric comorbidity, associated mechanisms (i.e., ED fears and perfectionism), and demographic factors (i.e., ethnicity and age) between individuals with atypical AN and AN.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Method<\/jats:title>\n                    <jats:p>\n                      Data from seven protocols were combined for a total 464 individuals diagnosed with atypical AN (\n                      <jats:italic>n<\/jats:italic>\n                      \u2009=\u2009215) or AN (\n                      <jats:italic>n<\/jats:italic>\n                      \u2009=\u2009249). Between\u2010group differences in ED severity and behaviors, psychiatric comorbidities, ED fears, perfectionism, and demographic factors were assessed using\n                      <jats:italic>t<\/jats:italic>\n                      \u2010tests, Wilcoxon rank\u2010sum tests, and Fisher's exact test.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>Participants with atypical AN reported higher levels of overvaluation of weight and shape than those with AN. Participants with AN scored higher on food\u2010related fears (anxiety about eating, food avoidance behaviors, and feared concerns) and fears of social eating, as well as obsessive\u2010compulsive symptoms. Participants with AN were more likely to identify as Asian or Pacific Islander. No other statistically significant differences were found between groups for overall ED severity, ED behaviors, psychiatric comorbidities, general ED fears, perfectionism, or demographic factors.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Discussion<\/jats:title>\n                    <jats:p>Overall, results support previous literature indicating limited differences between individuals with atypical AN and AN, though individuals with atypical AN reported more overvaluation of weight and shape and those with AN reported higher food and social eating fears and obsessive\u2010compulsive symptoms. Relatively few overall differences between atypical AN and AN highlight the importance of exploring dimensional conceptualizations of AN as an alternative to the current categorical conceptualization.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Public Significance<\/jats:title>\n                    <jats:p>This study assessed differences among individuals with atypical anorexia nervosa and anorexia nervosa in eating disorder severity and behaviors, comorbid psychiatric diagnoses, associated mechanisms, and demographic factors. Few differences emerged, though participants with atypical anorexia nervosa reported more overvaluation of weight and shape, while those with anorexia nervosa reported more food and social eating fears and higher obsessive\u2010compulsive symptoms. Results support exploration of these diagnoses as a spectrum disorder.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1002\/eat.24147","type":"journal-article","created":{"date-parts":[[2024,1,30]],"date-time":"2024-01-30T04:40:04Z","timestamp":1706589604000},"page":"903-915","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":23,"title":["Comparisons between atypical anorexia nervosa and anorexia nervosa: Psychological and comorbidity patterns"],"prefix":"10.1002","volume":"57","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9882-2333","authenticated-orcid":false,"given":"Hannah F.","family":"Fitterman\u2010Harris","sequence":"first","affiliation":[{"name":"Department of Psychological and Brain Sciences University of Louisville  Louisville Kentucky USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1308-4197","authenticated-orcid":false,"given":"Yuchen","family":"Han","sequence":"additional","affiliation":[{"name":"Department of Bioinformatics and Biostatistics University of Louisville  Louisville Kentucky USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8582-6201","authenticated-orcid":false,"given":"Kimberly D.","family":"Osborn","sequence":"additional","affiliation":[{"name":"Department of Psychological and Brain Sciences University of Louisville  Louisville Kentucky USA"},{"name":"School of Community Health Sciences, Counseling and Counseling Psychology Oklahoma State University  Louisville Kentucky USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0001-8494-3617","authenticated-orcid":false,"given":"Loie M.","family":"Faulkner","sequence":"additional","affiliation":[{"name":"Department of Psychological and Brain Sciences University of Louisville  Louisville Kentucky USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3938-9610","authenticated-orcid":false,"given":"Brenna M.","family":"Williams","sequence":"additional","affiliation":[{"name":"Department of Psychological and Brain Sciences University of Louisville  Louisville Kentucky USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1461-7303","authenticated-orcid":false,"given":"Jamie\u2010Lee","family":"Pennesi","sequence":"additional","affiliation":[{"name":"Department of Psychological and Brain Sciences University of Louisville  Louisville Kentucky USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2359-5206","authenticated-orcid":false,"given":"Cheri A.","family":"Levinson","sequence":"additional","affiliation":[{"name":"Department of Psychological and Brain Sciences University of Louisville  Louisville Kentucky USA"},{"name":"Department of Pediatrics \u2013 Division of Child and Adolescent Psychiatry University of Louisville  Louisville Kentucky USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2024,1,30]]},"reference":[{"key":"e_1_2_13_2_1","doi-asserted-by":"publisher","DOI":"10.1176\/appi.books.9780890425596"},{"key":"e_1_2_13_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.brat.2004.09.009"},{"key":"e_1_2_13_4_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.brat.2008.04.003"},{"key":"e_1_2_13_5_1","volume-title":"Manual for the Beck depression inventory II","author":"Beck A. 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