Table 2.

Regression results for predicting the state level vaccination coverage for children 6 months-17years, United States, end ofJanuary 2013.

Coefficients when predicting ln (children coverage percentage)
Variable	Short description	Estimate	Std. error	t-Value	Pr (>|t|)
	(Intercept)	0.01488	0.05956	0.25	0.804
Indep15	(Re) Shipments	0.42308	0.07285	5.807	0.000
Indep19	Focus on school	0.36769	0.07239	5.079	0.000
Indep6	Max # sites	0.29734	0.07016	4.238	0.000
Indep20	3rd Party dist’n	0.24461	0.06349	3.852	0.000
Indep12	% Public doses	0.2125	0.06837	3.108	0.003
Indep10	% Children	−0.18817	0.07965	−2.362	0.023
Indep17	Cars per capita	−0.2843	0.07726	−3.68	0.001
Indep9	% Underserved population	−0.28992	0.07701	−3.765	0.001
Indep8	% Visit, cost	−0.35139	0.08217	−4.276	0.000

Adjusted R-squared: 0.8291, regression’s p-value<0.001.