Table 1.
Statistically significant performance difference between lead-exposed subjects (E) involving the subgroups of high exposed (hE) and low exposed (lE), and controls (C) in the tapping test and in the single-choice reaction task.
| Test performance | Exposed (E) | Controls (C) | High exposed (hE) | Low exposed (lE) | P (E-C) | P (hE-C) | P (lE-C) |
|---|---|---|---|---|---|---|---|
| Tapping | |||||||
| FRQ1 (frequency 1. Half of test) (Hz) | 5.42 ± 0.69 | 5.78 ± 0.64 | 5.42 ± 0.56 | 5.42 ± 0.74 | .030 | .056 | .049 |
|
| |||||||
| Single form visual reaction test | |||||||
| GES (total time) (ms) | 444.2 ± 68.1 | 398.4 ± 39.1 | 446.0 ± 73.8 | 443.5 ± 66.4 | <.001 | .012 | <.001 |
| INT (initiation time) (ms) | 330.3 ± 42.8 | 306.0 ± 26.5 | 327.1 ± 44.9 | 331.6 ± 42.3 | .001 | .047 | .002 |
| MOV (movement time) (ms) | 112.4 ± 35.4 | 91.4 ± 21.6 | 115.7 ± 35.4 | 111.0 ± 35.6 | .001 | .009 | .004 |