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Frequently studied exposures
| 1991 (n = 16) |
2001 (n = 81) |
2011 (n = 173) |
|||
|---|---|---|---|---|---|
| Exposure | % of total* | Exposure | % of total* | Exposure | % of total* |
| Lead | 50 | Lead | 36 | BPA | 16 |
| Mercury | 19 | PCB | 20 | Mercury | 12 |
| Mercury | 19 | Organophosphate/chlorine | 12 | ||
| PM/air pollution | 13 | PCB | 12 | ||
| Organophosphate/chlorine | 10 | PM/air pollution | 10 | ||
| TCDD | 6 | Arsenic | 9 | ||
| Lead | 9 | ||||
| Manganese | 6 | ||||
| PAH | 6 | ||||
| PBDE | 6 | ||||
| Phthalates | 5 | ||||
Any exposures accounting for <5% of the portfolio are not included.
