Table 3

Outcomes and aHR of death in dialysis patients with C. difficile colitis

	All patients		C. difficile
			Absent		Present
Outcomes	Count	Per cent	N	Per cent	N	Per cent
Died	176,681	42.01	164,402	40.89	12,279	68.78
Colectomy	403	0.1	296	0.07	107	0.6
HR of death
			95% CI
	HR		Lower			Upper
Increased risk for mortality*
C. difficile colitis	1.8		1.77			1.83
≥65 years	2.28		2.25			2.3
Cirrhosis	1.76		1.71			1.81
HIV	1.39		1.32			1.46
GI bleeding	1.31		1.29			1.33
Laparotomy	1.25		1.18			1.33
Urosepsis	1.18		1.16			1.19
UTI	1.14		1.12			1.16
HCV	1.13		1.1			1.17
Leucopenia	1.124		1.055			1.198
Duodenal ulcer	1.085		1.045			1.127
Year of first ESRD service
2005	1.00		NA			NA
2006	1.07		1.03			1.12
2007	1.36		1.29			1.43
2008	1.74		1.63			1.85
Decreased risk for mortality*
Osteomyelitis	0.946		0.921			0.972
Esophagitis	0.906		0.874			0.939
Esophageal reflux	0.811		0.799			0.824
Diverticulitis	0.746		0.724			0.767
Black	0.723		0.715			0.731
PD	0.656		0.641			0.672
Hispanic	0.652		0.641			0.662
Kidney transplant	0.133		0.124			0.142

*Each covariate was present at or after the start of dialysis.
aHR, adjusted HR; ESRD, end-stage renal disease; GI, gastrointestinal; HCV, hepatitis C virus; PD, peritoneal dialysis; UTI, urinary tract infection.