Fig. 6

Relationships between the predicted mortality rate based on the SAPS 3 score at admission, observed 30-day mortality, and antimicrobial exposure during the ICU stay. Each density plot represents a category of antimicrobial exposure, from no exposure up to exposure to >3 antimicrobial drug classes. The observed 30-day mortality and ICU mortality are indicated above each plot. The number of patients in each category (N) and the average value (black dot with 95% confidence interval) are indicated