Table 4. Comparisons of adjusted KABC-II scores between high and low TCDD exposure groups in 5-year-olds.
| Low | High | ||||||
|---|---|---|---|---|---|---|---|
| (pg/g lipid) | TCDD < 2.5 | TCDD ≥ 2.5 | |||||
| Gender | Scales | Mean | SE | Mean | SE | P-value | Effect size |
| Boys | Number of subjects | 74 | 16 | ||||
| NVI | 90.1 | 1.6 | 78.9 | 3.8 | 0.010 | 0.083 | |
| Seq/Gsm | 102.5 | 1.9 | 105.8 | 4.3 | 0.508 | 0.006 | |
| Sim/Gv | 86.6 | 1.7 | 78.3 | 3.9 | 0.065 | 0.043 | |
| Sub 1: Conceptual Thinking | 6.8 | 0.32 | 5.8 | 0.74 | 0.244 | 0.017 | |
| Sub 2: Face Recognition | 8.8 | 0.27 | 7.6 | 0.63 | 0.099 | 0.035 | |
| Sub 3: Triangles | 10.0 | 0.35 | 9.3 | 0.81 | 0.434 | 0.008 | |
| Sub 4: Pattern Reasoning | 7.1 | 0.33 | 5.3 | 0.79 | 0.041 | 0.052 | |
| Sub 5: Hand Movements | 9.9 | 0.23 | 9.2 | 0.53 | 0.255 | 0.017 | |
| Sub 6: Number Recall | 11.4 | 0.37 | 11.8 | 0.85 | 0.678 | 0.002 | |
| Sub 7: Word Order | 9.3 | 0.35 | 10.0 | 0.81 | 0.476 | 0.007 | |
| Girls | Number of subjects | 47 | 21 | ||||
| NVI | 94.3 | 2.4 | 95.3 | 3.8 | 0.839 | 0.001 | |
| Seq/Gsm | 109.3 | 2.5 | 107.5 | 4.0 | 0.721 | 0.002 | |
| Sim/Gv | 88.6 | 2.5 | 92.6 | 3.9 | 0.420 | 0.012 | |
| Sub 1: Conceptual Thinking | 6.8 | 0.46 | 7.4 | 0.73 | 0.521 | 0.007 | |
| Sub 2: Face Recognition | 9.4 | 0.44 | 10.6 | 0.69 | 0.191 | 0.003 | |
| Sub 3: Triangles | 10.8 | 0.41 | 10.5 | 0.65 | 0.639 | 0.004 | |
| Sub 4: Pattern Reasoning | 7.1 | 0.53 | 8.7 | 0.85 | 0.132 | 0.040 | |
| Sub 5: Hand Movements | 10.4 | 0.36 | 9.2 | 0.58 | 0.117 | 0.043 | |
| Sub 6: Number Recall | 13.0 | 0.48 | 13.2 | 0.76 | 0.872 | 0.000 | |
| Sub 7: Word Order | 10.1 | 0.49 | 9.3 | 0.78 | 0.428 | 0.011 | |
SE: standard error, Sub: subscale, NVI = Sub 1–5, Seq/Gsm = Sub 6+7, Sim/Gv = Sub 1+2+4
P-value: compared by General Linear Model after adjustment for month-age, gestational age, birth weight of infant, maternal age, family income, parents' education years