Fig. 2

Kaplan–Meier curves of in-hospital mortality censored at 90 days stratified as pre-ICU qSOFA-positive or qSOFA-negative. ^aAdjusted for age, the presence of rigor (‘shaking chills’), prior location to the ICU and chronic health condition with immunosuppression. CI confidence interval, HR hazard ratio, ICU intensive care unit, qSOFA quick Sequential Organ Failure Assessment. The vertical tick marks on the curves denote censoring due to survival discharge