Fig. 1.

Kaplan–Meier survival curves of patients with Clostridium difficile infection (CDI). (A) Kaplan–Meier survival curve of patients with Charlson scores < 5 (solid line) compared with those with Charlson scores ≥ 5 (dotted line) (p = 0.002 by log-rank test). (B) Kaplan–Meier survival curve of patients without metastatic solid tumors (solid line) compared with those with metastatic solid tumors (dotted line) (p = 0.018 by log-rank test). (C) Kaplan–Meier survival curve of patients who received appropriate therapy (dotted line) compared with those who did not receive appropriate therapy (solid line) (p = 0.890 by log-rank test). (D) Kaplan–Meier survival curve of patients who received recommended treatment based on Charlson score (solid line) compared with those who did not receive such treatment (dotted line) (p = 0.001 by log-rank test).