Table 2.
Distribution of methyl bromide use near residences of pregnant women, CHAMACOS study, Salinas Valley, CA, 1999–2000 (n = 442).
| Group | n | No nearby MeBr use (%) | Percentile (kg) | |||
|---|---|---|---|---|---|---|
| 25th | 50th | 75th | 95th | |||
| 1-km radius | ||||||
| Trimester 1 | 338 | 83.7 | 0 | 0 | 0 | 1,669 |
| Trimester 2 | 408 | 86.3 | 0 | 0 | 0 | 766 |
| Trimester 3 | 390 | 86.4 | 0 | 0 | 0 | 615 |
| 3-km radius | ||||||
| Trimester 1 | 338 | 40.2 | 0 | 1,498 | 13,102 | 27,718 |
| Trimester 2 | 408 | 40.2 | 0 | 734 | 7,379 | 23,455 |
| Trimester 3 | 390 | 42.1 | 0 | 291 | 7,318 | 23,686 |
| 5-km radius | ||||||
| Trimester 1 | 338 | 21.6 | 82 | 8,201 | 34,838 | 68,893 |
| Trimester 2 | 408 | 25.5 | 0 | 7,419 | 29,676 | 53,685 |
| Trimester 3 | 390 | 25.4 | 0 | 6,010 | 26,688 | 59,983 |
| 8-km radius | ||||||
| Trimester 1 | 338 | 14.5 | 2,150 | 16,278 | 88,413 | 163,893 |
| Trimester 2 | 408 | 18.9 | 352 | 11,984 | 69,200 | 129,464 |
| Trimester 3 | 390 | 18.7 | 352 | 10,751 | 68,333 | 143,690 |
| MeBr, methyl bromide. | ||||||