Figure 4From: Vitamin D status and its association with season, hospital and sepsis mortality in critical illnessUnadjusted Kaplan-Meier plot for ICU survival stratified by definition of vitamin D deficiency (a) and month-specific vitamin D tertiles (b). Using the log-rank test, ICU mortality was not significantly different between groups (P = 0.893 for vitamin D sufficiency/insufficiency/deficiency classification and 0.164 for tertiles).Back to article page