Table 1. Primary and secondary variables of point-prevalence of each phase of the study.

	Phase 1		Phase 2		p value of difference
		95% CI		95% CI
Point-prevalence of CDI in Greek hospitals (per 10,000 patient bed-days)	5.6	3.8–8.3	3.9	2.5–6.2	0.111
Point-prevalence of diarrhea in Greek hospitals (per 10,000 patient bed-days)	33.0	28.2–38.5	27.2	23.0–33.2	0.011
Proportion of CDI among patients with diarrhea in Greek hospitals (per 100 patients with diarrhea)	16.98	11.94–23.58	14.29	9.16–21.45	0.522

Variables in bold indicate statistical significance.