Table 2.
Geometric mean serum concentrations of six chlorinated biphenyl (CB) congeners in ng/g lipid (25th-75th percentiles in parenthesis) at two examinations of two birth cohorts.
| Variable | Cohort 1 (N = 101) | Cohort 2 (N = 99) |
|---|---|---|
| First examination | ||
| CB-105 | 12.7 (7.9-20.9) | 7.9 (4.4-16.2) |
| CB-118 | 58.6 (36.1-95.8) | 47.6 (26.1-92.5) |
| CB-138 | 216 (141-360) | 148 (82.5-265) |
| CB-153 | 337 (196-518) | 213 (113-402) |
| CB-156 | 24.3 (14.9-37.9) | 13.8 (7.2-24.9) |
| CB-170 | 79.6 (49.1-130) | 45.1 (24.4-84.5) |
| CB-180 | 194 (110-315) | 113 (58.5-210) |
| CB-187 | 89.3 (55.7-157) | 51.5 (28.1-99.2) |
| Second examination | ||
| CB-105 | 5.4 (2.9-10.6) | 6.6 (4.3-11.0) |
| CB-118 | 30.6 (17.3-57.8) | 38.2 (24.5-63.7) |
| CB-138 | 74.1 (44.1-134) | 90.8 (58.3-161) |
| CB-153 | 210 (112-401) | 181 (107-333) |
| CB-156 | 13.8 (7.2-24.9) | 12.5 (7.3-24.4) |
| CB-170 | 42.1 (22.2-76.8) | 41.7 (24.8-80.9) |
| CB-180 | 128 (70.4-237) | 119 (69.0-225) |
| CB-187 | 52.6 (28.4-103) | 53.8 (33.8-98.8) |