Table 2. Demographic and clinical characteristics of the children participants.
| n | Mean (s.d.) | Median | Range | P | |
|---|---|---|---|---|---|
| Age | |||||
| ADHD (m/f) | 9/7 | 10.8 (1.1) | 10.7 | 8.7–13.1 | 0.89a |
| Control (m/f) | 11/8 | 10.8 (1.9) | 11 | 8.1–14.7 | |
| Conners Parents ADHD-Index | |||||
| ADHD | 16 | 69.8 (3.1) | 70 | 61.0–73.0 | <0.001b |
| Control | 19 | 46.9 (12.6) | 46 | 20.0–63.0 | |
| SDQ Parents Total | |||||
| ADHD | 15 | 19.1 (6.5) | 18 | 10.0–34.0 | <0.001a |
| Control | 19 | 5.1 (3.1) | 5 | 1.0–14.0 | |
| Medication | |||||
| ADHD | Methylphenidate (n=11) | ||||
| Control | None | ||||
| Comorbidities | |||||
| ADHD | F40.2 specific (isolated) phobias (n=4); F82 specific developmental disorder of motor function (n=2); F81.0 specific reading disorder (n=1); F81.2 specific disorder of arithmetical skills (n=1) | ||||
| Control | None | ||||
| Handedness | |||||
| ADHD (r/l) | 12/4 | ||||
| Control (r/l) | 18/1 | ||||
Abbreviations: ADHD, attention-deficit/hyperactivity disorder; f, female; l, left-handed; m, male; n, total number of participants; r, right-handed; SDQ, strengths and difficulties questionnaire.
a
Two-tailed two-sample t-test.
b
Two-tailed Wilcoxon rank-sum test.