Table 2. Risk factors for CDI.

Risk factor for CDI	Odds ratio from simple models	95% CI	p-value	Odds ratio from multi-variable model	95% CI	p-value
Intervall chemotherapy to diarrhea	OR(30–90 vs. ≤30 days) = 6.09 OR(≥90 vs. ≤30 days) = 1.15	2.56–14.48 0.62–2.15	p < 0.001a	OR(30–90 vs. ≤30 days) = 8.64 OR(≥90 vs. ≤30 days) = 1.33	2.48–30.06 0.66–2.67	p = 0.003a
Antibiotic therapy within 30 days	OR = 1.92	0.98–3.76	p = 0.056	OR = 2.26	1.05–4.88	p = 0.038

^ap-value for three-stage variable (≤30/30–90/≥90 days).