Table 4.
Associations between blood lead concentration and the scores of the ADHD-rating scale and continuous performance test within ADHD cases
| Variables | Unadjusted B (SE) | p-value | Adjusted B (SE)a | p-value |
|---|---|---|---|---|
| ADHD-Rating Scale | ||||
| Inattention | 0.66 (0.62) | 0.30 | 0.69 (0.75) | 0.36 |
| Hyperactivity/impulsivity | 0.94 (0.52) | 0.07 | 1.04 (0.60) | 0.87 |
| Total | 1.60 (1.08) | 0.14 | 1.74 (1.29) | 0.18 |
| Continuous Performance Test | ||||
| Omission errors | 0.86 (2.03) | 0.67 | 0.05 (2.29) | 0.99 |
| Commission errors | -0.47 (1.79) | 0.79 | -0.72 (2.08) | 0.72 |
| Response time | 2.71 (1.36) | 0.04 | 2.48 (1.60) | 0.12 |
| Response time variability | 2.18 (1.81) | 0.24 | 2.26 (2.23) | 0.31 |
B regression coefficient, SE standard error
aAdjusted for sex, age, gestational age, birth weight, economic status, parental education, and parents’ smoking behavior