Area under the receiver operating characteristic curve (AUC) for in-hospital mortality (A) and the combined outcome of ICU transfer or mortality (B) for all patients, patients with suspected infection, and patients without suspected infection. BTF indicates Between the Flags; MEWS, Modified Early Warning Score; NEWS, National Early Warning Score; qSOFA, Quick Sepsis-Related Organ Failure Assessment; and SIRS, Systemic Inflammatory Response Syndrome. Error bars indicate 95% CIs, and values without error bars indicate that the minimum and maximum error values equaled the point estimate.