Table 2.

Global Poisson regression results and AICs (N=3,071)

	Model I				Model II				Model III
Variables	Estimate	S.E.	Exp(est)	Sig.	Estimate	S.E.	Exp(est)	Sig.	Estimate	S.E.	Exp(est)	Sig.
Intercept	−1.284	0.050	0.277	***	−0.823	0.062	0.439	***	−0.825	0.068	0.438	***
Low birth weight rate	0.014	0.000	1.014	***	0.009	0.001	1.009	***	0.008	0.001	1.008	***
Marriage postponement	−0.004	0.001	0.996	***	−0.007	0.001	0.993	***	−0.003	0.001	0.997	*
Cohabitation	0.023	0.008	1.024	**	0.043	0.008	1.044	***	0.022	0.008	1.022	**
Divorce	0.020	0.004	1.020	***	0.015	0.004	1.015	**	0.016	0.005	1.017	***
% Non-Hispanic Black					0.007	0.001	1.007	***	0.006	0.001	1.006	***
% Hispanic					−0.002	0.000	0.998	***	−0.003	0.001	0.997	***
% Other races					−0.002	0.001	0.998		−0.002	0.001	0.998
Affluence									−0.049	0.011	0.953	***
Disadvantage									−0.002	0.013	0.998
Stability									−0.010	0.008	0.990
Late or no prenatal care									0.003	0.001	1.003	**
Global Model AIC	2090.211				1932.242				1878.252
GWPR Model AIC	1399.831 (bandwidth=792)‡				1341.720 (bandwidth=1,503)				1281.668 (bandwidth=2,023)

^*p<.05

^**p<.01

^***p<.001

^‡bandwidth indicates the number of counties included in the local estimation.