Table 7:
Summary of ln-transformed metal coefficients in models fit for birth weight (grams), controlling for the following covariates: maternal pre-pregnancy BMI, maternal age and gestational age and three additional categorical variables: race (white or minority), infant sex and smoking while pregnant (yes or no) (n=374).
| Metal | Estimated Coefficient |
95% CI | p- value |
Estimated change in BW from 25th-75th percentile |
95% CI |
|---|---|---|---|---|---|
| Al | 2.7 | (−16.5, 21.9) |
0.783 | 5.9 | (− 35.8, 47.5) |
| As | −26 | (−110, 58.1) | 0.543 | −11.7 | (− 49.5, 26.1) |
| Ba | 16.3 | (−27.8, 60.3) |
0.468 | 20.4 | (− 34.7, 75.4) |
| Cd | −38.1 | (−114.7, 38.5) |
0.328 | −31.5 | (−95, 31.9) |
| Co | 83.7 |
(23.9, 143.5) |
0.006 | 82.5 |
(23.6, 141.5) |
| Cu | −17 | (−134.5, 100.6) |
0.776 | −4.6 | (−36, 26.9) |
| Fe | −138.2 |
(−263.4,− 13) |
0.030 | −51.5 |
(− 98.1,− 4.9) |
| Mn | −57.2 |
(−104.3,− 10.1) |
0.017 | −27.2 |
(− 49.6,− 4.8) |
| Ni | 12.2 | (−18.8, 43.3) |
0.438 | 19.5 | (−30, 69.1) |
| Pb | −58.3 |
(−97.9,− 18.8) |
0.004 | −72.7 |
(−122, −23.4) |
| Rh | −1490.3 |
(−1767,− 1214) |
0.000 | −1365.5 |
(− 1629, − 1119) |
| Se | 117.6 | (−88.2, 323.4) |
0.262 | 20.7 | (− 15.5, 56.8) |
| Ti | −104.6 | (−312.5, 103.3) |
0.323 | −36.8 | (− 109.9, 36.4) |
| Zn | 154.1 | (−4.5, 312.8) |
0.057 | 29.3 | (−0.9, 59.5) |
*
p<0.05
**
p<0.01
***
p<0.001