Table 2.
Maternal serum concentrations of PFOA and PFOS (ng/mL).
| PFOA | PFOS | |
|---|---|---|
| GM (SD)a | 16.2 (2.8) | 13.2 (1.9) |
| Mean ± SDa | 31.0 ± 50.5 | 15.6 ± 8.9 |
| n < LODa | 0 | 11 |
| Range | (0.6–459.5) | (LODb–92.9) |
| Percentilea | ||
| 5th | 3.7 | 5.1 |
| 25th | 8.0 | 9.5 |
| 50th | 14.3 | 13.9 |
| 75th | 29.8 | 19.7 |
| 95th | 114.1 | 31.8 |
| Body mass indexc (GM) | ||
| Underweight, < 18.5 | 15.2 | 12.0 |
| Normal, 18.5 to < 25 | 18.9 | 14.1 |
| Overweight, 25 to < 30 | 16.5 | 13.6 |
| Obese, ≥ 30 | 13.5 | 12.5 |
| Educationc (GM) | ||
| < 12 years | 12. 6 | 9.2 |
| 12 years | 15.4 | 13.1 |
| 13–15 years | 17.0 | 13. 8 |
| ≥ 16 years | 17.7 | 14.3 |
| Maternal agec (GM) | ||
| 19–29 years | 16.1 | 13.7 |
| 30–34 years | 17.2 | 12.8 |
| ≥ 35 years | 17.2 | 12.9 |
| Parityc (GM) | ||
| 0 previous live births | 21.6 | 16.2 |
| ≥ 1 previous live birth | 14.6 | 12.3 |
| NHANES 2003–2004 (females) | ||
| GM (95% CI) (Calafat et al. 2007) | 3.5 (3.2–3.8) | 18.4 (17.0–20.0) |
| Abbreviations: GM, geometric mean; LOD, limit of detection. aAmong 1,630 births included in analysis. b0.25. cAmong 1,330 women at time of enrollment. | ||