Table 3.

Logistic Regression Model for Use of General Anesthesia at the Dentist Visit (n = 221,635 Visits among 32,558 Children) Estimated with Generalized Estimating Equations.^a

Variables	Odds Ratio Estimate	Standard Errorb	95% Confidence Limits	P Value
Number of prior POHS visits (reference: none)
1	0.92	0.04	0.84–1.00	0.054
2 or more	0.93	0.03	0.87–0.99	0.029
Patient age at visit	0.80	0.01	0.79–0.81	<0.001
Sex (male, reference: female)	1.13	0.03	1.06–1.20	<0.001
Race/ethnicity (reference: White)
Black, not Hispanic	0.67	0.03	0.62–0.73	<0.001
Hispanic	0.60	0.02	0.56–0.65	<0.001
Other race, not Hispanic	1.06	0.06	0.95–1.19	0.28
Region (reference: Triangle)
Asheville	3.11	0.21	2.72–3.55	<0.001
Charlotte	1.84	0.12	1.62–2.09	<0.001
Cherokee	4.67	0.39	3.96–5.50	<0.001
Greenville (Inner Coastal)	2.36	0.19	2.01–2.78	<0.001
Outer Banks	1.62	0.21	1.26–2.10	<0.001
Pinehurst (Sandhills)	2.70	0.19	2.35–3.10	<0.001
Raleigh (Capital)	1.69	0.12	1.48–1.93	<0.001
Wilmington (Southern Coast)	3.25	0.22	2.85–3.70	<0.001
Winston Salem (Triad)	1.14	0.10	0.96–1.35	0.14

POHS, physician oral health services.

^aEstimated exchangeable correlation is 0.0029.

^bEmpirical standard errors.