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

Table 3

Results of univariate negative binomial regressions predicting number of children with BLL ≥ 10 μg/dL by county.

Univariate negative binomial regression
	Coef.	95% CI
NATA02	66.897*	(35.0818, 98.7209)
NATA05	99.736*	(56.7037, 142.768)
% pre50 housing	0.035^∗	(0.0320, 0.0385)
Urban (ref)	—
Suburban	−0.689*	(−1.0317, −0.3466)
Rural	−0.803*	(−1.1508, −0.4551)
% Black	−0.003	(−0.0063, 0.00029)
Targeted/mandatory	0.033	(−0.1035, 0.1697)
% below poverty	−0.019*	(−0.0268, −0.0098)

^∗𝑃<0.0001.