Table 1. Selected percentiles and geometric mean urinary BPA levels (ng/ml) from the 2005–2006 NHANES data for the sample population and by age and gender.
| All | 6–11 years | 12–19 years | 20–39 years | 40–59 years | 60+ years | Female | Male | |
|---|---|---|---|---|---|---|---|---|
| 25% | 1.0 | 1.5 | 1.3 | 1.1 | 0.7 | 0.7 | 0.8 | 1.2 |
| 50% | 2.0 | 2.7 | 2.4 | 2.1 | 1.7 | 1.5 | 1.8 | 2.1 |
| 75% | 3.7 | 5.0 | 4.3 | 3.8 | 3.1 | 3.0 | 3.7 | 3.7 |
| 90% | 7.0 | 13.5 | 8.4 | 7.7 | 5.9 | 6.4 | 6.2 | 7.7 |
| 95% | 11.5 | 22.8 | 11.9 | 11.3 | 10.0 | 8.8 | 10.4 | 12.8 |
| Geometric mean | 2.0 | 2.9 | 2.5 | 2.2 | 1.7 | 1.6 | 1.8 | 2.2 |
| N | 2548 | 356 | 702 | 586 | 454 | 450 | 1278 | 1270 |
Abbreviation: BPA, bisphenol A