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Description of the sample and ADHD groups
| ADHD-IA (N = 59) | ADHD-HI (N = 43) | ADHD-C (N = 34 | Controls (N = 1, 083) | |
|---|---|---|---|---|
| Gender (M:F) | 1.95:1 | 1.86:1 | 1.43:1 | 1:1.40 |
| Inattention symptomsa | 4.29 | 2.28 | 4.50 | 1.17 |
| Hyperactive/impulsivity symptomsa | 1.73 | 4.13 | 4.03 | 0.94 |
| Verbal IQ | 97.63 | 101.95 | 100.12 | 101.80 |
| Performance IQ | 97.64 | 97.21 | 95.85 | 100.91 |
Symptom counts are based on caregiver reports on the DISC-IV (based on DSM-IV criteria).
