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Effective patient risk stratification is essential to guiding hospitalization decisions and the clinical management of AHF. Clinical decision support systems can be used to improve predictions of mortality made in emergency care settings for the purpose of AHF risk stratification. In this study, several models for the prediction of seven-day mortality among AHF patients were developed by applying machine learning techniques to retrospective patient data from 236,275 total emergency department (ED) encounters, 1881 of which\u00a0were considered positive for AHF and were used for model training and testing. The models used varying subsets of age, sex, vital signs, and laboratory values. Model performance was compared to the Emergency Heart Failure Mortality Risk Grade (EHMRG) model, a commonly used system for prediction of seven-day mortality in the ED with similar (or, in some cases, more extensive) inputs. Model performance was assessed in terms of area under the receiver operating characteristic curve (AUROC), sensitivity, and specificity.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Results<\/jats:title>\n                <jats:p>When trained and tested on a large academic dataset, the best-performing model and EHMRG demonstrated test set AUROCs of 0.84 and 0.78, respectively, for prediction of seven-day mortality. Given only measurements of respiratory rate, temperature, mean arterial pressure, and FiO<jats:sub>2<\/jats:sub>, one model produced a test set AUROC of 0.83. Neither a logistic regression comparator nor a simple\u00a0decision tree outperformed EHMRG.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Conclusions<\/jats:title>\n                <jats:p>A model using only the measurements of four clinical variables outperforms EHMRG in the prediction of seven-day mortality in AHF. With these inputs, the model could not be replaced by logistic regression or reduced to a simple\u00a0decision tree without significant performance loss. In ED settings, this minimal-input risk stratification tool may assist clinicians in making critical decisions about patient disposition by providing early and accurate insights into individual patient\u2019s risk profiles.<\/jats:p>\n              <\/jats:sec>","DOI":"10.1186\/s13040-021-00255-w","type":"journal-article","created":{"date-parts":[[2021,3,31]],"date-time":"2021-03-31T10:03:18Z","timestamp":1617184998000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":13,"title":["Prediction of short-term mortality in acute heart failure patients using minimal electronic health record data"],"prefix":"10.1186","volume":"14","author":[{"given":"Ashwath","family":"Radhachandran","sequence":"first","affiliation":[]},{"given":"Anurag","family":"Garikipati","sequence":"additional","affiliation":[]},{"given":"Nicole S.","family":"Zelin","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7614-9299","authenticated-orcid":false,"given":"Emily","family":"Pellegrini","sequence":"additional","affiliation":[]},{"given":"Sina","family":"Ghandian","sequence":"additional","affiliation":[]},{"given":"Jacob","family":"Calvert","sequence":"additional","affiliation":[]},{"given":"Jana","family":"Hoffman","sequence":"additional","affiliation":[]},{"given":"Qingqing","family":"Mao","sequence":"additional","affiliation":[]},{"given":"Ritankar","family":"Das","sequence":"additional","affiliation":[]}],"member":"297","published-online":{"date-parts":[[2021,3,31]]},"reference":[{"issue":"1","key":"255_CR1","doi-asserted-by":"publisher","first-page":"16","DOI":"10.1038\/s41572-020-0151-7","volume":"6","author":"M Arrigo","year":"2020","unstructured":"Arrigo M, Jessup M, Mullens W, Reza N, Shah AM, Sliwa K, et al. 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