Table 3.

Poisson regression model of 9 metal elements.

Model fit	β	Std. Error	z–value	P–value
(Intercept)	−1.61	0.46	−3.55	0.0004*
Blood.lead	−0.11	0.05	−1.97	0.06
Blood.cadmium	0.22	0.05	4.43	0.00001*
Blood.mercury	−0.15	0.05	−3.17	0.002*
Blood.selenium	−0.002	0.002	−0.79	0.42
Blood.manganese	0.006	0.016	0.38	0.71
Blood.inorganic.mercury	−0.41	0.44	−0.94	0.35
Blood.ethylmercury	3.43	1.16	2.95	0.003*
Blood.chromium	−0.76	0.40	−1.88	0.06
Blood.cobalt	−0.05	0.15	−0.31	0.76
Model evaluation
AIC	2203.6

^*P < 0.001.