Table 2.

Bivariate and multivariate analysis predicting use of SB-related urologic surgery

Covariates	unadjusted OR (95%CI)	p value	adjusted OR (95%CI)	p value
Age groups
<1 y	0.6(0.4–0.8)	<0.001	0.5(0.3–0.7)	<0.001
1 y	1.9(1.2–2.9)	0.06	1.4(0.9–2.2)	0.13
2–5 y	4.3(3.4–5.5)	<0.001	3.2(2.5–4.0)	<0.001
6–11 y	8.7(6.9–10.9)	<0.001	6.5(5.1–8.2)	<0.001
12–18 y	6.9(5.7–8.5)	<0.001	5.3(4.3–6.6)	<0.001
19–21 y	3.1(2.4–4.0)	0.16	2.7(2.1–3.5)	<0.001
>21 y	ref
Gender
male	1.0(0.9–1.1)	0.59	0.9(0.8–1.0)	0.05
female	ref
Year
1998–2004	1.1(0.9–1.5)	0.33	1.0(0.8–1.2)	0.93
2005–2011	ref
Insurance
Public	ref
Private	1.4(1.2–1.6)	<0.001	1.0(0.9–1.2)	0.70
Renal failure
Yes	0.6(0.5–0.8)	<0.001	1.0(0.8–1.3)	0.67
No	ref
Teaching status
Yes	3.9(2.6–5.9)	<0.001	2.7(1.9–3.7)	<0.001
No	ref

^*State variable was not shown in the table for brevity