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We retrospectively analysed data from five referral centres in Japan. Multivariate binary logistic regression was used to identify independent predictors of AC, and receiver operating characteristic curve analysis was used to determine their optimal cut-off points. The analysis included data from 54 patients with 90 AC events. Logistic regression revealed that serum sodium and C-reactive protein (CRP) levels were independent predictors of AC. Serum sodium levels\u2009&lt;\u2009137\u00a0mEq\/L had a sensitivity of 71.1% and specificity of 95.6%. CRP levels\u2009&gt;\u20091.3\u00a0mg\/dL had a sensitivity of 84.4% and specificity of 94.9%. In combination, serum sodium levels\u2009&lt;\u2009137\u00a0mEq\/L or CRP levels\u2009&gt;\u20091.3\u00a0mg\/dL for AC diagnosis had sensitivity and specificity values of 97.8% and 94.4%, respectively. The combined use of serum sodium and CRP levels had high sensitivity and specificity, and can be used for AC screening in standard clinical practice. The model can assist in identifying AC among high-risk individuals. A larger prospective study is needed to validate these results.<\/jats:p>","DOI":"10.1038\/s41598-020-70466-4","type":"journal-article","created":{"date-parts":[[2020,8,11]],"date-time":"2020-08-11T10:10:29Z","timestamp":1597140629000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Development of a simple prediction model for adrenal crisis diagnosis"],"prefix":"10.1038","volume":"10","author":[{"given":"Takuyuki","family":"Katabami","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hidekazu","family":"Tsukiyama","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Makito","family":"Tanabe","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ren","family":"Matsuba","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mariko","family":"Murakami","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ami","family":"Nishine","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sachi","family":"Shimizu","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kensuke","family":"Sakai","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yasushi","family":"Tanaka","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Toshihiko","family":"Yanase","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2020,8,11]]},"reference":[{"key":"70466_CR1","doi-asserted-by":"publisher","first-page":"364","DOI":"10.1210\/jc.2015-1710","volume":"101","author":"SR Bornstein","year":"2016","unstructured":"Bornstein, S. 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