Table 4 Preterm birth and average VOC exposure, entire pregnancy, Camp Lejeune, 1968-1985
Exposure | Preterm birth | OR* (95% CI) | p value | |
|---|---|---|---|---|
No #, % | Yes #, % | |||
Tetrachloroethylene (PCE) | ||||
No exposure | 3453, 31.4 | 269, 29.7 | 1.0 (ref.) | |
>0- < 35.8 ppb | 3763, 34.2 | 326, 36.0 | 1.0 (0.9-1.2) | 0.67 |
≥35.8- < 52.7 ppb | 1895, 17.2 | 144, 15.9 | 0.9 (0.7-1.1) | 0.32 |
≥52.7- < 81.4 ppb | 1148, 10.4 | 81, 8.9 | 0.8 (0.6-1.0) | 0.09 |
≥ 81.4 ppb | 731, 6.7 | 86, 9.5 | 1.3 (1.0-1.6) | 0.08 |
Trichloroethylene (TCE) | ||||
No exposure | 1979, 18.0 | 150, 16.6 | 1.0 (ref.) | |
>0- < 1.7 ppb | 4599, 41.8 | 383, 42.3 | 1.1 (0.9-1.3) | 0.35 |
≥1.7- < 3.2 ppb | 2209, 20.1 | 174, 19.2 | 1.0 (0.8-1.3) | 0.74 |
≥3.2- < 9.8 ppb | 1304, 11.9 | 124, 13.7 | 1.3 (1.0-1.6) | 0.07 |
≥ 9.8 ppb | 899, 8.2 | 75, 8.3 | 1.1 (0.8-1.5) | 0.51 |
Benzene | ||||
No exposure | 7820, 71.2 | 643, 71.0 | 1.0 (ref.) | |
>0- < 1.0 ppb | 2474, 22.5 | 217, 24.0 | 1.1 (0.9-1.3) | 0.43 |
≥ 1.0 ppb | 696, 6.3 | 46, 5.0 | 0.8 (0.6-1.1) | 0.17 |