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Adjusted 90-day incidence of C. difficile infection (per 1000 residents) for (A) ciprofloxacin, cotrimoxazole, nitrofurantoin, (B) amoxicillin, amoxicillin-clavulanate, levofloxacin, moxifloxacin, and (C) cephalexin, clindamycin, cloxacillin, for durations of 5 to 14 days. Shaded regions represent 95% confidence intervals.
