Table 1.

Results of aspatial logistic regression

Variables	Parameter est.	Std error	P value	Odds ratio	Odds ratio C.I. (95%)
Intercept	−1.307	0.134	0.00000*	-	-
Age	−0.002	0.002	0.46015	0.998	0.994–1.003
Median household income	−0.006	0.001	0.00000*	0.994	0.992–0.996
Presence of farm house vs. None	0.117	0.042	0.00474*	1.124	1.037–1.220
Provider to case ratios	−0.109	0.157	0.48948	0.897	0.659–1.221
Current smoker vs. Noncurrent smoker	0.249	0.040	0.00000*	1.283	1.185–1.388
Married vs. Unmarried	−0.239	0.037	0.00000*	0.787	0.733–0.846
Black vs. White	0.182	0.046	0.00006*	1.200	1.097–1.312
Year of Diagnosis
2001 vs. 2007	−0.038	0.087	0.66032	0.962	0.811–1.142
2002 vs. 2007	−0.107	0.062	0.08500	0.899	0.796–1.015
2003 vs. 2007	−0.084	0.065	0.19844	0.920	0.810–1.045
2004 vs. 2007	0.043	0.064	0.50322	1.043	0.921–1.182
2005 vs. 2007	0.038	0.063	0.54389	1.039	0.918–1.176
2006 vs. 2007	0.048	0.054	0.38213	1.048	0.943–1.165
Private Insurance vs. Uninsured	−0.630	0.095	0.00000*	0.533	0.442–0.642
Public Insurance vs. Uninsured	−0.755	0.097	0.00000*	0.470	0.389–0.568
For-profit facilities vs. Not-for-profit	−0.121	0.036	0.00080*	0.886	0.825–0.951
Comorbidities
1–2 vs. No comorbidities	0.529	0.0376	0.00000*	1.698	1.577–1.828
>2 vs. No comorbidities	1.377	0.046	0.00000*	3.963	3.619–4.339

^*Significant at 5% level