Table 1.

Baseline demographic and clinical characteristics of patients with CDI from which Clostridium difficile strains were obtained for culture

Patient characteristics	No. (%) of patients		Pb
	Rifamycin resistant (n = 49)	Rifamycin susceptible (n = 98)
Median age (IQR) in yrsa	66 (55–76)	64 (53–77)	0.47
Female	22 (45)	50 (51)	0.48
Race
Caucasian	31 (63)	52 (53)	0.45*
African-American	10 (20)	27 (28)
Hispanic	8 (16)	10 (10)
Asian	0 (0)	2 (2)
Median length of hospital stay (IQR) in days	13 (8–28)	14 (8–25)	0.76
Type of CDI
Hospital acquired	38 (78)	74 (76)	0.91*
Community acquired	7 (14)	13 (13)
Indeterminate	4 (8)	11 (11)
Hospital admission within previous 60 days	30 (61)	50 (52)	0.27
Comorbidity
Congestive heart failure	10 (20)	15 (15)	0.44
Obesity	2 (4)	1 (1)	0.26*
Hypertension	29 (59)	53 (54)	0.56
Diabetes	15 (31)	31 (30)	1.00
Renal insufficiency	14 (29)	34 (35)	0.47
Respiratory insufficiency	13 (27)	14 (14)	0.07
Malignancy	10 (20)	13 (13)	0.26
Rifamycin use in previous 90 days	2 (4)	3 (3)	1.00*

^aInterquartile range (IQR) is reported.

^b*, Determined using the Fisher exact test. All other P values were determined using χ² analysis.