Table 6.
Descriptive statistics for MIREC Organochorine concentrations in maternal and cord blood plasma (lipid-adjusted—μg/kg)
| Contaminanta | Aliquot | N | LOD | % < LOD | Min | Median | 95th Percentile | Max | KM Median | 95 % CI | GM | 95 % CI | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Beta-HCH | Maternal | 1898 | 0.01 | 31.88 | ND | 2.31 | 18.97 | 1108.11 | 2.24 | 2.15 | 2.32 | 2.32 | 2.19 | 2.46 |
| Cord | 1379 | 0.01 | 93.55 | ND | ND | 47.62 | 740.74 | NA | NA | NA | NA | NA | NA | |
| Cis-nonachlor | Maternal | 1934 | 0.005 | 88.31 | ND | ND | 1.25 | 3.91 | NA | NA | NA | NA | NA | NA |
| DDE | Maternal | 1935 | 0.09 | 1.03 | ND | 48.33 | 262.55 | 5306.12 | 48.33 | 46.68 | 49.99 | 56.02 | 54.02 | 58.08 |
| Cord | 1382 | 0.09 | 87.48 | ND | ND | 452.50 | 1827.96 | NA | NA | NA | NA | NA | NA | |
| DDT | Maternal | 1935 | 0.05 | 96.28 | ND | ND | ND | 175.44 | NA | NA | NA | NA | NA | NA |
| Cord | 1381 | 0.05 | 99.71 | ND | ND | ND | 500 | NA | NA | NA | NA | NA | NA | |
| HCB | Maternal | 1934 | 0.04 | 69.54 | ND | ND | 11.73 | 101.67 | NA | NA | NA | NA | NA | NA |
| Cord | 1380 | 0.04 | 99.86 | ND | ND | ND | 400 | NA | NA | NA | NA | NA | NA | |
| Mirex | Maternal | 1934 | 0.01 | 91.83 | ND | ND | 2.50 | 38.03 | NA | NA | NA | NA | NA | NA |
| Oxychlordane | Maternal | 1933 | 0.005 | 7.81 | ND | 2.09 | 4.60 | 17.5 | 2.09 | 2.02 | 2.15 | 2.01 | 1.96 | 2.06 |
| Cord | 1378 | 0.005 | 97.97 | ND | ND | ND | 50 | NA | NA | NA | NA | NA | NA | |
| Parlar26 | Maternal | 1934 | 0.005 | 97.47 | ND | ND | ND | 3.65 | NA | NA | NA | NA | NA | NA |
| Parlar50 | Maternal | 1934 | 0.005 | 87.28 | ND | ND | 1.22 | 5 | NA | NA | NA | NA | NA | NA |
| Transnonachlor | Maternal | 1934 | 0.01 | 15.87 | ND | 2.89 | 7.30 | 34.33 | 2.88 | 2.78 | 2.99 | 2.90 | 2.83 | 2.98 |
| Cord | 1381 | 0.01 | 98.99 | ND | ND | ND | 100 | NA | NA | NA | NA | NA | NA | |
ND Due to a high percentage of non-detects, descriptive statistics were not reported
NA Non-applicable (KM median and GM MLE of contaminants with less than 50 % of observations detected were not calculated)
a Aldrin, Alpha-chlordane, Gamma-Chlordane, and Gamma-HCH were not detected in both maternal and cord blood samples. Contaminants cis-nonachlor, Mirex, Parlar-26, and Parlar-50 were not detected in the cord blood