Table 1. Demographic and clinical characteristics of ADHD and HCs.
| Characteristics | ADHD (n=42) | HCs (n=41) | T value | P value |
|---|---|---|---|---|
| Age in years (Mean ± SD) | 9.4 ± 1.1 | 9.5 ± 0.8 | -0.23 | 0.819 a |
| IQ (Mean ± SD) | 110.3 ± 13.5 | 115.3 ± 11.6 | -1.80 | 0.076 a |
| ADHD subtype (n, %) | ||||
| ADHD-I | 22 (52.4) | — | — | — |
| ADHD-C | 20 (47.6) | — | — | — |
| ADHD symptoms (Mean ± SD) | ||||
| Inattentive | 17.8 ± 3.2 | 8.8 ± 4.7 | 10.32 | <0.001 a |
| Hyperactive/Impulsive | 12.7 ± 6.0 | 7.3 ± 4.5 | 4.66 | <0.001 a |
| Total | 30.6 ± 7.8 | 16.1 ± 8.5 | 8.09 | <0.001 a |
Abbreviations: ADHD, attention-deficit/hyperactivity disorder; HCs, healthy controls; SD, standard deviation; IQ, intelligence quotient; ADHD-I, ADHD inattentive subtype; ADHD-C, ADHD combined subtype.
a
The P value was obtained using two-sample t-test.