Table 2.

Rates of PSI among hospitalized patients with and without CKD^a

PSI	PSI Description	No. of Events	Rate in CKDb	Rate in Non-CKDb	aIRR (95% CI)c	P
	Complications of surgical care
1	complications of anesthesia	58	0.12	0.08	1.60 (1.07 to 2.37)	0.020
8	postoperative hip fracture	17	0.11	0.02	4.89 (2.79 to 8.57)	<0.001
9	postoperative hemorrhage or hematoma	170	0.30	0.26	0.96 (0.72 to 1.29)	0.800
10	postoperative physiological/metabolic derangement	239	0.96	0.20	4.00 (3.18 to 5.02)	<0.001
11	postoperative respiratory failure	1086	4.01	1.97	1.37 (1.19 to 1.57)	<0.001
12	postoperative PE or DVT	645	1.23	0.96	1.04 (0.88 to 1.22)	0.700
13	postoperative sepsis	407	2.47	1.33	1.39 (1.14 to 1.71)	0.001
14	postoperative wound dehiscence	80	0.90	0.59	1.12 (0.74 to 1.70)	0.600
	Complications of any acute hospitalization
2	death in low-mortality DRG	107	0.47	0.18	1.53 (1.14 to 2.05)	0.005
3	decubitus ulcer	1176	1.64	1.20	0.95 (0.84 to 1.08)	0.500
4	failure to rescue	1491	11.0	11.2	0.95 (0.85 to 1.05)	0.300
7	infection as a result of medical care	359	0.34	0.16	2.33 (1.92 to 2.82)	<0.001

^aDRG, diagnosis-related group; DVT, deep vein thrombosis; PE, pulmonary embolism.

^bEvents per 100 hospitalizations.

^cAdjusted for age, gender, race, diabetes, CVD, and cancer.