Table 3.
Between-group differences in three domain scores of binary Bayley-III for specific OCPs in breast milk a.
| OCPs | Cognitive Scale | Language Scale | Social-Emotional Scale | ||||||
|---|---|---|---|---|---|---|---|---|---|
| ≤median (n = 35) |
>median (n = 20) |
p | ≤89 (n = 8) |
>89 (n = 47) |
p | ≤89 (n = 17) |
>89 (n = 38) |
p | |
| δ-HCH | 0.124 ± 0.115 | 0.189 ± 0.125 | 0.025 * | 0.213 ± 0.181 | 0.137 ± 0.107 | 0.417 | 0.129 ± 0.115 | 0.157 ± 0.125 | 0.465 |
| trans-CHL | 0.108 ± 0.108 | 0.173 ± 0.425 | 0.280 | 0.0456 ± 0.0353 | 0.146 ± 0.287 | 0.294 | 0.241 ± 0.445 | 0.0824 ± 0.105 | 0.048 * |
| 4,4′-DDD | 0.759 ± 1.07 | 1.43 ± 1.86 | 0.176 | 0.386 ± 1.05 | 1.11 ± 1.46 | 0.031 * | 1.37 ± 1.56 | 1.35 ± 0.219 | 0.250 |
| 4,4′-DDT | 0.856 ± 0.839 | 0.502 ± 0.495 | 0.298 | 1.49 ± 1.13 | 0.582 ± 0.578 | 0.015 * | 0.733 ± 0.836 | 0.706 ± 0.713 | 0.898 |
| Dieldrin | 0.314 ± 0.362 | 0.418 ± 0.514 | 0.582 | 0.114 ± 0.0814 | 0.392 ± 0.444 | 0.042 * | 0.274 ± 0.274 | 0.386 ± 0.473 | 0.792 |
| Endosulfan I | 0.129 ± 0.183 | 0.308 ± 0.522 | 0.411 | 0.0425 ± 0.0346 | 0.220 ± 0.376 | 0.019 * | 0.222 ± 0.515 | 0.182 ± 0.258 | 0.852 |
| Endrin ketone | 0.0986 ± 0.128 | 0.133 ± 0.174 | 0.394 | 0.0298 ± 0.0295 | 0.125 ± 0.154 | 0.036 * | 0.120 ± 0.188 | 0.107 ± 0.126 | 0.466 |
* p < 0.05. a Higher and lower groups were based on a cutoff point of 89, which is a critical value between average and lower than average Bayley-III scores, with the exception of the cognitive scale. The cutoff point for the cognitive scale is a median of 100.