Table 4.
Model derived concentrations of fresh weight and lipid adjusted concentrations of POPs in maternal and cord serum according to education status.
| Compound | Primary | Secondary | Superior |
N person-trimesters (1°, 2°, 3° education)a |
|---|---|---|---|---|
| Fresh weight POP (95% confidence limits) (pg g−1 serum) | ||||
| p′,p′-DDT | 101 (49, 210) | 182 (115, 288) | 248 (132, 467) | 48, 110, 55 |
| p′,p′-DDE | 1430 (670, 3040) | 3050 (1890, 4920) | 4260 (2210, 8220) | 52, 143, 50 |
| HCB | 20 (14, 29) | 24 (19, 30) | 34 (24, 46) | 35, 104, 36 |
| PCB-74 | 5.8 (3.8, 9.0) | 6.9 (5.3, 9.1) | 9.5 (6.5, 14) | 41, 115, 41 |
| PCB-99 | 8.5 (5.4, 13) | 9.2 (7.0, 12) | 12 (8.4, 18) | 41, 115, 41 |
| PCB-105 | 2.2 (1.8, 2.6) | 2.2 (1.9, 2.4) | 2.2 (1.8, 2.5) | 41, 115, 41 |
| PCB-118 | 13 (9.1, 20) | 16 (12, 20) | 19 (14, 27) | 41, 115, 41 |
| PCB-138–158* | 28 (20, 39) | 38 (30, 48) | 52 (39, 70) | 52, 143, 50 |
| PCB-146 | 8.4 (5.4, 13) | 11 (8.2, 14) | 15 (10, 22) | 41, 115, 41 |
| PCB-153* | 39 (26, 59) | 51 (40, 66) | 77 (54, 109) | 52, 143, 50 |
| PCB-170* | 14 (9.2, 21) | 21 (16, 27) | 29 (20, 42) | 52, 143, 50 |
| PCB-180* | 30 (21, 45) | 43 (34, 55) | 61 (44, 85) | 52, 143, 50 |
| PCB-183 | 5.1 (3.1, 8.3) | 6.8 (5.0, 9.2) | 11 (6.9, 16) | 52, 143, 50 |
| PCB-187 | 14 (8.8, 22) | 21 (16, 28) | 26 (18, 39) | 41, 115, 41 |
| PCB-194* | 5.9 (3.8, 9.0) | 10 (7.7, 13) | 12 (8.6, 18) | 52, 143, 50 |
| PCB-196–203 | 7.2 (4.6, 11) | 9.4 (7.2, 12) | 11 (7.6, 16) | 41, 115, 41 |
| PCB-199 | 6.0 (3.9, 9.3) | 8.7 (6.6, 11) | 11 (7.4, 16) | 41, 115, 41 |
| Lipid adjusted POPs (95% confidence limits) (ng g−1 lipid) | ||||
| p′,p′-DDT | 18 (8.5, 37) | 33 (20, 52) | 43 (23, 82) | 48, 110, 55 |
| p′,p′-DDE | 237 (109, 515) | 542 (332, 886) | 764 (389, 1500) | 52, 143, 50 |
| HCB | 2.5 (1.8, 3.6) | 3.1 (2.5, 3.9) | 4.3 (2.1, 5.8) | |
| PCB-74 | 0.73 (0.48, 1.1) | 0.92 (0.71, 1.2) | 1.2 (0.84, 1.8) | 41, 115, 41 |
| PCB-99 | 1.1 (0.68. 1.7) | 1.2 (0.92, 1.6) | 1.6 (1.1, 2.3) | 41, 115, 41 |
| PCB-105 | 1.1 (0.75, 1.7) | 1.2 (0.91, 1.5) | 1.2 (0.81, 1.6) | 41, 115, 41 |
| PCB-118 | 2.3 (1.5, 3.4) | 2.8 (2.2, 3.6) | 3.3 (2.4, 4.7) | 52, 143, 50 |
| PCB-138–158* | 4.9 (3.3, 7.2) | 6.8 (5.3, 8.7) | 9.7 (7.0, 14) | 52, 143, 50 |
| PCB-146 | 1.1 (0.68, 1.6) | 1.4 (1.1, 1.9) | 2.0 (1.4, 2.9) | 41, 115, 41 |
| PCB-153* | 6.7 (4.5, 9.9) | 9.0 (7.0, 12) | 13 (9.4, 19) | 52, 143, 50 |
| PCB-170* | 2.3 (1.6, 3.5) | 3.7 (2.9, 4.8) | 5.2 (3.6, 7.3) | 52, 143, 50 |
| PCB-180* | 5.2 (3.6, 7.6) | 7.6 (6.0, 9.6) | 11 (7.8, 15) | 52, 143, 50 |
| PCB-183* | 0.63 (0.39, 1.0) | 0.88 (0.66, 1.2) | 1.3 (0.88, 2.0) | 52, 143, 50 |
| PCB-187 | 1.8 (1.1, 2.7) | 2.7 (2.1, 3.6) | 3.4 (2.3, 4.9) | 41, 115, 41 |
| PCB-194* | 0.74 (0.48, 1.1) | 1.3 (1.0, 1.7) | 1.6 (1.1, 2.3) | 52, 143, 50 |
| PCB-196–203 | 0.90 (0.58, 1.4) | 1.2 (0.95, 1.6) | 1.4 (0.99, 2.1) | 41, 115, 41 |
| PCB-199 | 0.76 (0.50, 1.2) | 1.1 (0.88, 1.5) | 1.4 (0.97, 2.0) | 41, 115, 41 |
*
Significant difference across age group and education status at p < 0.05.
a
N breaks down according to trimester for each education status as follows for all compounds: 1st – 16, 45, 15; 2nd – 13, 36, 13; 3rd – 12, 34, 13 and for those with cord blood – 11, 28, 9; except for HCB: 1st – 12, 34, 12; 2nd – 13, 36, 13; 3rd – 10, 34, 11 and p,p′-DDT: 1st – 16, 45, 25; 2nd – 10, 25, 11; 3rd: 11, 22, 11; and cord blood – 11, 28, 8.