Table 4.

Results from negative binomial models

	Coefficient	SD	z	P>z	95% CI
Period from 2001 to 2003 (Model 0103) (LR χ2 (6)=267.6 with p<0.001; log-likelihood=−671.86; AIC=1359.7; BIC=1388.85)
BDist	0.24	0.03	7.71	<0.001	0.18	0.30
VehDist	2.55	0.69	3.69	<0.001	1.20	3.90
BTrack	0.24	0.08	2.88	0.004	0.08	0.41
ResArea	1.57	0.34	4.66	<0.001	0.91	2.22
pAge0_14	0.06	0.02	2.89	0.004	0.03	0.09
MeEmIncome	−0.05	0.02	−2.61	0.009	−0.08	−0.01
Period from 2010 to 2012(Model 1012) (LR χ2 (6)=281.3 with p<0.001; log-likelihood=−815.9; AIC=1647.9; BIC=1677.2)
BDist	0.19	0.03	6.95	<0.001	0.14	0.25
VehDist	2.33	0.59	3.91	<0.001	1.16	3.49
BTrack	0.29	0.07	3.94	<0.001	0.15	0.44
ResArea	1.29	0.27	4.73	<0.001	0.75	1.82
pAge0_14	0.05	0.02	2.14	0.033	0.004	0.101
MeEmIncome	−0.02	0.006	−3.31	0.001	−0.03	−0.01