{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,12]],"date-time":"2025-10-12T11:11:23Z","timestamp":1760267483262,"version":"build-2065373602"},"reference-count":25,"publisher":"Wiley","issue":"9","license":[{"start":{"date-parts":[[2017,8,8]],"date-time":"2017-08-08T00:00:00Z","timestamp":1502150400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/100000133","name":"Agency for Healthcare Research and Quality","doi-asserted-by":"publisher","award":["K12HS023011"],"award-info":[{"award-number":["K12HS023011"]}],"id":[{"id":"10.13039\/100000133","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100001582","name":"Dermatology Foundation","doi-asserted-by":"publisher","id":[{"id":"10.13039\/100001582","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Arthritis Care &amp;amp; Research"],"published-print":{"date-parts":[[2017,9]]},"abstract":"<jats:sec><jats:title>Objective<\/jats:title><jats:p>To determine the prevalence and risk factors for hospitalization with dermatomyositis and assess inpatient burden of dermatomyositis.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Data on 72,651,487 hospitalizations from the 2002\u20132012 Nationwide Inpatient Sample, a 20% stratified sample of all acute\u2010care hospitalizations in the US, were analyzed. International Classification of Diseases, Ninth Revision, Clinical Modification coding was used to identify hospitalizations with a diagnosis of dermatomyositis.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>There were 9,687 and 43,188 weighted admissions with a primary or secondary diagnosis of dermatomyositis, respectively. In multivariable logistic regression models with stepwise selection, female sex (logistic regression: adjusted odds ratio 2.05 [95% confidence interval (95% CI) 1.80, 2.34]), nonwhite race (African American: 1.68 [1.57, 1.79]; Hispanic: 2.38 [2.22, 2.55]; Asian: 1.54 [1.32, 1.81]; and multiracial\/other: 1.65 [1.45, 1.88]), and multiple chronic conditions (2\u20135: 2.39 [2.20, 2.60] and \u22656: 2.80 [2.56, 3.07]) were all associated with higher rates of hospitalization for dermatomyositis. The weighted total length of stay (LOS) and inflation\u2010adjusted cost of care for patients with a primary inpatient diagnosis of dermatomyositis was 80,686 days and $168,076,970, with geometric means of 5.38 (95% CI 5.08, 5.71) and $11,682 (95% CI $11,013, $12,392), respectively. LOS and costs of hospitalization were significantly higher in patients with dermatomyositis compared to those without. Notably, race\/ethnicity was associated with increased LOS (log\u2010linear regression: adjusted \u03b2 [95% CI] for African American: 0.14 [0.04, 0.25] and Asian: 0.38 [0.22, 0.55]) and cost of care (Asian: 0.51 [0.36, 0.67]).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>There is a significant and increasing inpatient burden for dermatomyositis in the US. There appear to be racial differences, as nonwhites have higher prevalence of admission, increased LOS, and cost of care.<\/jats:p><\/jats:sec>","DOI":"10.1002\/acr.23190","type":"journal-article","created":{"date-parts":[[2017,5,26]],"date-time":"2017-05-26T11:56:40Z","timestamp":1495799800000},"page":"1391-1399","source":"Crossref","is-referenced-by-count":9,"title":["Predictors of Hospitalization, Length of Stay, and Cost of Care Among Adults With Dermatomyositis in the United States"],"prefix":"10.1002","volume":"69","author":[{"given":"Michael C.","family":"Kwa","sequence":"first","affiliation":[{"name":"Northwestern University Feinberg School of Medicine Chicago Illinois"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5075-8846","authenticated-orcid":false,"given":"Kaveh","family":"Ardalan","sequence":"additional","affiliation":[{"name":"Ann &amp; Robert H. 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