Table 2:

Relative risk associated with 30-day complications, adjusted for calendar year.

Variable Name	Basic Statistics		P value	Univariate Model RR			Multivariate Model RR
	Observed N (%)	Event # (%)		RR & 95% CI	P value	Global P value	RR & 95% CI	P value	Global P value
Total	55389 (100.0)	28510 (51.5)
Cohort Group
Community-Dwelling	36926 (66.7)	17411 (47.2)	<0.001	Ref.		<0.001	Ref.		<0.001
Nursing Home (NH)	18463 (33.3)	11099 (60.1)		1.3 (1.3 – 1.3)	<0.01		1.3 (1.3 – 1.3)	<0.01
Procedure type
Female pelvic surgery	2982 (5.4)	1022 (34.3)	<0.001	Ref.		<0.001	Ref.		<0.001
Transurethral resection of prostate (TURP)	26448 (47.7)	13358 (50.5)		1.5 (1.4 – 1.6)	<0.001		1.3 (1.3 – 1.4)	<0.001
Suprapubic tube placement (SPT)	21429 (38.7)	12100 (56.5)		1.7 (1.6 – 1.7)	<0.001		1.6 (1.5 – 1.6)	<0.001
Hemorrhoid	2757 (5.0)	1120 (40.6)		1.2 (1.1 – 1.3)	<0.001		1.1 (1.0 – 1.2)	0.005
Rectal prolapse	1773 (3.2)	910 (51.3)		1.5 (1.4 – 1.6)	<0.001		1.4 (1.3 – 1.5)	<0.001
Age Group
65–69	5537 (10.0)	2736 (49.4)	<0.001	Ref.		<0.001	Ref.		<0.001
70–74	8892 (16.1)	4356 (49.0)		1.0 (0.7 – 1.0)	0.619		1.0 (1.0 – 1.0)	0.526
75–79	11021 (19.9)	5445 (49.4)		1.0 (1.0 – 1.0)	0.993		1.0 (1.0 – 1.1)	0.034
80–85	12353 (22.3)	6256 (50.6)		1.0 (1.0 – 1.1)	0.130		1.1 (1.0 – 1.1)	<0.001
≥85	17586 (31.7)	9717 (55.3)		1.1 (1.1 – 1.2)	<0.001		1.2 (1.2 – 1.2)	<0.001
Race
White	48872 (88.2)	24919 (51.0)	<0.001	Ref.		<0.001	Ref.		<0.001
Non-white	4209 (7.6)	2358 (56.0)		1.1 (1.1 – 1.1)	<0.001		1.1 (1.1 – 1.1)	<0.001
Charlson score groups
0 to 1	10712 (19.3)	3920 (36.6)	<0.001	Ref.		<0.001	Ref.		<0.001
2	19548 (35.3)	9435 (48.3)		1.3 (1.3 – 1.4)	<0.001		1.3 (1.3 – 1.3)	<0.001
≥3	25129 (45.4)	15155 (60.3)		1.7 (1.6 – 1.7)	<0.001		1.7 (1.6 – 1.7)	<0.001

Note: percentages represent row percentages.