Table 4.

Predictors of the likelihood of multiple-metal exposure in children from Montevideo.

Variables	OR [95% CI]1
Model 1
Child age (months)	0.95 [0.92, 0.99]*
Sex2	0.82 [0.43, 1.59]
Hemoglobin <10.5 g/dL	1.76 [0.89, 3.45]
Blood lead (μg/dL)	1.17 [1.09, 1.27]**
Model 2
Child age (months)	0.95 [0.91, 0.99]*
Sex2	0.97 [0.47, 1.98]
Hemoglobin <10.5 g/dL	1.64 [0.79, 3.41]
Blood lead (μg/dL)	1.16 [1.06, 1.26]**
Maternal education	0.59 [0.27, 1.29]
Household possessions	0.93 [0.80, 1.09]
Model 3
Child age (months)	0.98 [0.93, 1.02]
Sex2	1.14 [0.50, 2.59]
Hemoglobin <10.5 g/dL	1.95 [0.83, 4.57]
Blood lead (μg/dL)	1.16 [1.06, 1.28]**
Maternal education	1.16 [0.44, 3.06]
Household possessions	0.92 [0.78, 1.10]
Mother exposed to at least 2 toxic metals1	2.65 [1.16, 6.03]*

¹To be counted as exposed to multiple metals (variable coded as 1), the child/mother had to have hair concentrations above the median of the distribution for at least two of the metals. If child/mother had hair concentrations equal to or below the median for two or more metals, they were coded as 0 for this variable.

²Reference group is boys.

^**p<0.01,

^*p<0.05,

^#p<0.1.