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 (n = 29)
Breast milk	2.2 (1.1, 3.3)	0.0001	0.4
Not breastfed in preceding month (n = 31)
Breast milk	1.1 (0.01, 2.2)	0.04	0.1