Table 4.
Logistic regression analysis of association between GWG (continuous) and binary measures of cord blood perfluoroalkyl substances concentrations per 1 kg and interquartile range increase in GWG.
| GWG Increase a | N | PFOA >0.39 ng/mL c | PFOS >0.30 ng/mL d | PFHxS >0.30 ng/mL d |
|---|---|---|---|---|
| OR (95% CI) | OR (95% CI) | OR (95% CI) | ||
| Total | 1223 | |||
| 1 kg | 1.04 (1.02, 1.06) | 1.03 (1.00, 1.05) | 1.01 (0.99, 1.03) | |
| IQR b | 1.33 (1.13, 1.56) | 1.20 (1.03, 1.40) | 1.07 (0.91, 1.25) | |
| Males | 650 | |||
| 1 kg | 1.05 (1.02, 1.08) | 1.02 (0.99, 1.05) | 1.01 (0.98, 1.04) | |
| IQR b | 1.40 (1.12, 1.75) | 1.20 (0.93, 1.41) | 1.09 (0.88, 1.35) | |
| Females | 573 | |||
| 1 kg | 1.01 (1.00, 1.06) | 1.03 (1.00, 1.07) | 1.00 (0.97, 1.03) | |
| IQR b | 1.26 (1.00, 1.59) | 1.28 (1.02, 1.60) | 1.02 (0.81, 1.29) |
a Adjusted for parity, pre-pregnancy BMI; b Interquartile range (IQR) increase = 7 kg; c dichotomized at median; d dichotomized at LOD.