Figure 2. Area under the receiver operating characteristic curves (AUROCs) for discriminatory capacity for 28-day mortality and ICU mortality. (A) Twenty-eight–day mortality. AUROC: SOFA, 0.74 (95% CI, 0.68 to 0.79); qSOFA, 0.59 (95% CI, 0.53 to 0.66); SIRS, 0.60 (95% CI, 0.54 to 0.66). (B) ICU mortality. AUROC: SOFA, 0.74 (95% CI, 0.68 to 081); qSOFA, 0.59 (95% CI, 0.52 to 0.66); SIRS, 0.63 (95% CI, 0.57 to 0.70). SOFA: Sequential Organ Failure Assessment; qSOFA: quick SOFA; SIRS: systemic inflammatory response syndrome; CI: confidence interval; ICU: intensive care unit.