Treatment of first recurrence of Clostridium difficile infection: fidaxomicin versus vancomycin.

Kaplan–Meier analysis indicated that patients aged ≥65 years were more likely to have a recurrence during weeks 2, 3, and 4 of follow-up than were younger patients, and the difference between the 2 groups was highly significant by log rank and Wilcoxon tests ( P = .006 and P = .01, respectively).

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