Table 4.
Elimination half-life (years) of serum concentrations of eight major PCB congeners in two birth cohorts each examined at two occasions, adjusted for changes in body size and for dietary blubber intake, as calculated for subjects with an initial serum total PCB concentration in the highest quartile.
| Congener | Cohort 1 | Cohort 2 | p-value* | Both cohorts | 95% CI |
|---|---|---|---|---|---|
| CB-105 | 4.5 | 4.3 | 0.78 | 4.4 | 3.8 ; 5.4 |
| CB-118 | 5.3 | 3.9 | 0.049 | 4.5 | 3.9 ; 5.4 |
| CB-138 | 3.7 | 2.7 | 0.0088 | 3.3 | 2.9 ; 3.7 |
| CB-153 | 7.7 | 4.7 | 0.034 | 6.6 | 5.4 ; 8.5 |
| CB-156 | 6.8 | 7.6 | 0.70 | 7.0 | 5.6 ; 9.1 |
| CB-170 | 6.7 | 6.4 | 0.87 | 6.6 | 5.4 ; 8.6 |
| CB-180 | 8.5 | 9.4 | 0.79 | 8.7 | 6.7 ; 12.4 |
| CB-187 | 7.4 | 4.7 | 0.10 | 6.7 | 5.3 ; 9.0 |
*
for difference between the two data sets