Table 3.
Multivariate linear regression of first trimester log2 perfluoroalkyl substance concentrations (ng/mL) and total GWG (parameter coefficients, 95% CI) stratified by pre-pregnancy BMI.
| Perfluoroalkyl Substance | Underweight /Normal a N = 1036 | Overweight a N = 345 | Obese a N = 228 |
|---|---|---|---|
| β (95% CI) | β (95% CI) | β (95% CI) | |
| PFOA | 0.38 (−0.03, 0.79) | 0.58 (−0.26, 1.42) | 0.38 (−0.81, 1.56) |
| PFOS | 0.39 (0.02, 0.75) | −0.08 (−0.94, 0.78) | 0.10 (−1.07, 1.29) |
| PFHxS | 0.12 (−0.14, 0.38) | −0.12 (−0.73, 0.48) | 0.50 (−0.32, 1.31) |
a Adjusted for age, income, and parity.