Maternal Blood, Plasma, and Breast Milk Lead: Lactational Transfer and Contribution to Infant Exposure

http://dx.doi.org/10.1289/ehp.1307187



Table 4. Relationship between breast milk lead (μg/L, 1 month postpartum) and infant blood lead (μg/dL, 3 months of age).
Predictor Estimate (95% CI) p-Value Partial R2
ap = 0.06 for interaction between breast milk lead and breastfeeding status.
Unadjusted (n = 60)      
Breast milk 1.8 (1.1, 2.6) < 0.0001 0.3
Adjusted (n = 60)      
Breast milk 1.8 (1.1, 2.6) < 0.0001 0.3
Breastfeeding (months) 0.3 (–0.6, 0.8) 0.8 0.0
Stratified modela      
Breastfed in preceding month (= 29)      
Breast milk 2.2 (1.1, 3.3) 0.0001 0.4
Not breastfed in preceding month (= 31)      
Breast milk 1.1 (0.01, 2.2) 0.04 0.1