Table 2.
Distribution of telomere length (T/S ratio) in whole blood, per- and poly-fluoroalkyl substances (ng/mL), and polybrominated diphenyl ethers (ng/g lipid) in serum
| N | % Above MDL | % Machine Readable | Geometric Mean | Geometric SD | Percentiles | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| 5% | 25% | 50% | 75% | 95% | ||||||
| Telomere Length | ||||||||||
| Newborn | 292 | 100 | 100 | 1.5 | 1.2 | 1.1 | 1.3 | 1.5 | 1.7 | 1.9 |
| Maternal | 110 | 100 | 100 | 1.1 | 1.2 | 0.9 | 1.0 | 1.1 | 1.2 | 1.3 |
| Per- and poly-fluoroalkyl substances (PFAS) | ||||||||||
| PFNA | 326 | 98.5 | 99.7 | 0.3 | 2.1 | 0.1 | 0.2 | 0.3 | 0.5 | 0.9 |
| PFOA | 326 | 100 | 100 | 0.8 | 2.0 | 0.3 | 0.5 | 0.8 | 1.2 | 2.2 |
| PFHxS | 326 | 100 | 100 | 0.4 | 2.2 | 0.1 | 0.2 | 0.3 | 0.6 | 1.5 |
| PFOS | 326 | 100 | 100 | 2.0 | 2.1 | 0.6 | 1.2 | 2.0 | 3.2 | 6.1 |
| Me-PFOSA-AcOH | 326 | 98.5 | 99.7 | 0.1 | 2.2 | 0.0 | 0.0 | 0.1 | 0.1 | 0.2 |
| PFDeA | 326 | 74.2 | 92.3 | 0.1 | 2.3 | 0.0 | 0.1 | 0.1 | 0.2 | 0.5 |
| PFUdA | 326 | 77.3 | 95.1 | 0.1 | 2.6 | 0.0 | 0.1 | 0.1 | 0.2 | 0.4 |
| Polybrominated diphenyl ethers (PBDEs) | ||||||||||
| BDE-47 | 326 | 99.7 | 100 | 10.7 | 2.1 | 3.6 | 6.8 | 9.6 | 15.7 | 36.9 |
| BDE-99 | 326 | 81.9 | 99.1 | 3.4 | 2.0 | 1.3 | 2.4 | 3.2 | 4.9 | 10.4 |
| BDE-153 | 326 | 57.7 | 94.2 | 5.9 | 2.8 | 1.4 | 3.0 | 5.4 | 10.3 | 35.9 |
| BDE-100 | 326 | 41.1 | 100 | 2.2 | 2.3 | 0.8 | 1.2 | 1.9 | 3.2 | 8.6 |
Abbreviations: MDL Method detection limit, SD Standard deviation
Note: Geometric mean, geometric SD, and percentile values use the machine read value if it was available. If there was no machine read value, it was replaced with MDL/square root of 2. There are 326 pregnant participants, of which there are 76 matched maternal–fetal unit pairs