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. 2010 Jul 26;9:43. doi: 10.1186/1476-069X-9-43

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.

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