Do US Ambient Air Lead Levels Have a Significant Impact on Childhood Blood Lead Levels: Results of a National Study

Table 5

Results of spatial lag regression.

Spatial lag regression
Variables	𝛽	SE	Z value	P value
NATA05	50.83515	10.4221	4.8776	<0.001
% pre50 housing	0.0125	0.00113	11.0852	<0.001
Urban-rural	0.0972	0.0293	3.3193	<0.001
% below poverty	0.0107	0.0022	4.9392	<0.001
Targeted/mandatory testing	−0.2067	0.0347	−5.953	<0.001
R-squared: 0.386367
Sq. Correlation: —
Sigma-square: 0.219
S.E of regression: 0.4681
Log likelihood: −1010.7
Akaike info criterion: 2035.4
Schwarz criterion: 2072.62