Human biomonitoring of heavy metals in the vicinity of non-ferrous metal plants in Ath, Belgium

Table 3 Multiple linear regression analyses: significant determinants of biomarkers among study participants by age group, Ath, Belgium, 2009

Dependent variable	Independent variable	Partial r²	β estimate	p-value
Children aged 2.5 to 6 years
Blood lead, μg/l	Geographical area	0.40	−0.092	0.05
Children aged 7 to 11 years
Blood lead, μg/l	Housing age	0.129	−0.141	0.005
	BMI	0.081	−0.020	0.016
Urinary cadmium, μg/g cr	BMI	0.159	−0.038	0.002
Urinary RBP, μg/g cr	Urinary cadmium	0.241	0.491	<0.001
Adults (40-60 years)
Blood lead, μg/l	Sex	0.115	−0.158	0.001
	Alcohol consumption	0.072	0.010	0.027
	Age	0.057	0.010	0.020
	BMI	0.038	−0.010	0.033
Blood cadmium, μg/l	Smoking status	0.304	0.388	0.001
	Ferritine	0.046	−0.120	0.008
	Age	0.030	0.011	0.005
Urinary cadmium, μg/g cr	Age	0.211	0.022	0.001
	Smoking status	0.056	0.219	0.016

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