Table 4.

Patient and Hospital Risk Factors and Their Association with Any PSI

Risk Factor		Odds Ratio	99% Confidence Intervals	p-value
Age		1.008	1.009–1.011	<.0001
Race	White	Ref		<.0001
	Black	1.179	1.121–1.241
	Hispanic	0.955	0.896–1.018
	Other*	1.012	0.972–1.053
Payer	Private	Ref		<.0001
	Medicare	1.094	1.047–1.142
	Medicaid	1.353	1.287–1.423
	Other&	0.645	0.613–0.678
Gender	Male vs. Female	1.444	1.398–1.491	<.0001
Comorbidity Index		1.791	1.669–1.922	<.0001
Hospital Bed-size	Large	Ref
	Medium	0.908	0.859–0.959
	Small	0.887	0.852–0.924
Teaching Hospital	Non-Teaching vs Teaching	0.821	0.792–0.851	<.0001
Hospital Region	West	Ref		<.0001
	Northeast	0.852	0.808–0.898
	Midwest	1.224	1.164–1.288
	South	1.207	1.155–1.126