| Quintile of serum PCB | ||||
---|---|---|---|---|---|
 | 1 | 2 | 3 | 4 | 5 |
Mothers, n | 34 | 35 | 35 | 35 | 34 |
Children analyzed, n | 34 | 35 | 35 | 35 | 34 |
Serum PCB (ng/mL)- nondetects imputed, geometric mean (range) | 0.7 (0.5–0.9) | 1.0 (0.9–1.1) | 1.4 (1.1–1.7) | 2.2 (1.7–3.0) | 4.7 (3.0–12.1) |
Serum PCB (ng/mL)- nondetects assigned 0, geometric mean (range) | 0.5 (0–0.8) | 0.8 (0.4–1.1) | 1.1 (0.7–1.6) | 2.1 (1.4–2.9) | 4.6 (2.9–11.9) |
Crude sex ratio | 0.706 | 0.629 | 0.457 | 0.657 | 0.412 |
Year of child's birth, mean ± sd | 1988 ± 5 | 1983 ± 7 | 1985 ± 7 | 1982 ± 6 | 1980 ± 6 |
Yrs between delivery and blood analysis, mean ± sd | 6.2 ± 5.1 | 10.1 ± 6.8 | 8.9 ± 6.8 | 11.1 ± 6.1 | 13.6 ± 5.8 |
Father's age (yrs) at delivery, mean ± sd | 31.2 ± 5.5 | 31.3 ± 5.0 | 33.9 ± 5.5 | 32.3 ± 6.9 | 30.6 ± 5.3 |
Mother's age (yrs) at delivery, mean ± sd | 29.7 ± 4.9 | 29.2 ± 3.8 | 30.3 ± 4.9 | 29.4 ± 4.0 | 28.3 ± 4.6 |
Captains cohort, n (%) | 16 (47.1) | 30 (85.7) | 29 (82.9) | 34 (97.1) | 33 (97.1) |
Previous male child, n (%) | 19 (55.9) | 26 (74.3) | 19 (54.3) | 16 (45.7) | 17 (50.0) |
Parity of mother, n (%) | Â | Â | Â | Â | Â |
   1 | 7 (20.6) | 13 (37.1) | 12 (34.3) | 9 (25.7) | 7 (20.6) |
   2 | 17 (50.0) | 15 (42.9) | 16 (45.7) | 21 (60.0) | 19 (55.9) |
   >2 | 10 (29.4) | 7 (20.0) | 7 (20.0) | 5 (14.3) | 8 (23.5) |