Table 5. Vitamin D and the risk for peritonitis or all-cause death.

	No vitamin D	Oral active vitamin D
Risk for the 1st episode of peritonitis	Ref	0.43 (95% CI 0.28–0.64)
Risk for all–cause death	Ref	0.46 (95% CI 0.27–0.81)
Risk for gram-positive peritonitis	Ref	0.51 (95% CI 0.36–0.72)
Risk for gram-negative peritonitis	Ref	0.44 (95% CI 0.26–0.73)
Risk for sterile peritonitis	Ref	0.84 (95% CI 0.46–1.52)
Time to 1st episode of peritonitis (months)a	5.5 (2.8–30.6)	16.3 (6.3–30.6)b
Episodes of peritonitis/patient-year	0.45	0.29

^amedian (interquartile range);

^bP<0.001.