Table 4.

Hazard Ratios for Death by Baseline Status.

	Female			Male			All
Independent Variables	Hazard Ratio	95% CI	P-value	Hazard Ratio	95% CI	P-value	Hazard Ratio	95% CI	P-value
Baseline status: Nontoxigenic C. difficile compared to no C. difficile	0.98	0.45, 2.15	0.958	0.60	0.24, 1.50	0.272	0.78	0.43, 1.41	0.406
Baseline status: Nontoxigenic C. difficile compared to toxigenic C. difficile	0.59	0.27, 1.28	0.181	0.45	0.18, 1.14	0.091	0.51	0.28, 0.92	0.026
Baseline status: Toxigenic C. difficile compared to no C. difficile	1.67	1.15, 2.43	0.007	1.32	0.90, 1.92	0.154	1.52	1.17, 1.99	0.002
Covariates:
Age	1.02	1.0, 1.03	<0.001	1.01	1.00, 1.02	0.016	1.02	1.0, 1.02	<0.001
Female	_	_	_	_	_	_	0.92	0.72, 1.17	0.486
Non-White	0.42	0.22, 0.77	0.006	0.78	0.48, 1.26	0.308	0.60	0.4, 0.87	0.008
Nursing home, previous	0.95	0.5, 1.80	0.884	1.35	0.73, 2.52	0.341	1.04	0.67, 1.63	0.845
Charlson Deyo score	1.13	1.03, 1.24	0.013	1.15	1.03, 1.27	0.009	1.14	1.06, 1.22	<0.001
Number admissions during previous 28 days	1.30	0.96, 1.76	0.090	0.76	0.48, 1.22	0.260	1.08	0.84, 1.38	0.561
Number nights in hospital during previous 180 days	1.01	1.0, 1.02	0.002	1.02	1.0, 1.03	<0.001	1.02	1.0, 1.02	<0.001
Number prior positive C. difficile tests	0.90	0.64, 1.27	0.550	0.68	0.43, 1.08	0.099	0.81	0.62, 1.06	0.129