OR: Any Index UC Operation	95% CI	p-value
Sex
Female (referent)	-	-	-
Male	1.29	1.04–1.53	0.018
Region
Northeast (Referent)	-	-	-
North Central	2.27	1.64–3.14	<0.001
South	1.48	1.07–2.03	0.017
West	1.36	0.93–1.97	0.109
Unknown	1.28	0.58–2.84	0.548
Insurance Type
EPO/PPO (referent)	-	-	-
HMO/Cap POS	1.08	0.78–1.49	0.635
POS	0.99	0.78–1.58	0.637
HDHP/CDHP	1.24	0.83–1.85	0.288
Comp	1.30	0.78–2.16	0.307
Grouped Charlson Index
0 (referent)	-	-	-
1	1.54	1.11–2.13	0.009
2+	4.28	3.32–5.52	<0.001