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Receiver operating characteristic (ROC) analysis for age, creatinine, albumin, white blood cell count (WBC), and Charlson comorbidity index (CCI) at admission for all-cause in-hospital death. ROC areas under the curve: age, 0.684 (0.640–0.726); creatinine, 0.675 (0.631–0.717); WBC, 0.665 (0.620–0.707); albumin, 0.675 (0.631–0.717); and CCI 0.637 (0.592–0.681).
