Table 3.
Adjusted parameter estimates for birthweight by biological markers of lead exposure in separate linear regression modelsa
Variable | N | β | P-value | 95% CI |
---|---|---|---|---|
Cord Blood Lead (μg/dL) | 464 | -31.1 | 0.41 | -105.4, 43.3 |
Maternal Blood at Delivery (μg/dL) | 526 | 9.3 | 0.80 | -64.2, 82.9 |
Tibia Lead Continuous (μg/g) | 538 | -4.4 | 0.01 | -7.9, -0.9 |
Tibia Lead Quartiles | ||||
Q1 (< 1 - 4.1) | 137 | Reference | ||
Q2 (4.1 - 9.2) | 137 | 17.2 | 0.72 | -75.6, 110.1 |
Q3 (9.2 - 15.4) | 137 | -19.1 | 0.69 | -112.1, 73.9 |
Q4 (15.4 - 43.2) | 137 | -95.4 | 0.05 | -189.9, -0.8 |
P-Trend | 0.06 |
aAll models are adjusted for maternal age, years of maternal education, infant gender, maternal arm circumference, gestational age, smoking status during pregnancy, marital status, maternal hemoglobin one month post-partum, and parity
Number - N, Coefficient - β, Confidence Interval - CI.