Table 1 Sample description
ADHD + IQ ≥ 120 | Control + IQ ≥ 120 | ADHD + IQ 90–110 | Control + IQ 90–110 | χ2 Student’s t test F | |||||
|---|---|---|---|---|---|---|---|---|---|
N | M (SD)/% | N | M (SD)/% | N | M (SD)/% | N | M (SD)/% | ||
Cohort 1 | |||||||||
ADHD diagnosis | |||||||||
Inattentive | 21 | 41.2 | 17 | 33.3 | n.s | ||||
Hyperactive | 5 | 9.8 | 7 | 13.7 | |||||
Combined | 22 | 43.1 | 25 | 49 | |||||
Unspecified | 3 | 5.9 | 2 | 3.9 | |||||
IQ score | 51 | 126.2 (5.1) | 51 | 126.9 (5.5) | 51 | 101.3 (4.9) | 51 | 101.5 (4.3) | n.s* |
Age in years | 51 | 15.4 (4.5) | 51 | 15.1 (4.4) | 51 | 15.4 (4.5) | 51 | 15.3 (4.4) | n.s |
Gender | |||||||||
Male | 29 | 56.9 | 29 | 56.9 | 29 | 56.9 | 29 | 56.9 | n.s |
Cohort 2 | |||||||||
ADHD diagnosis | |||||||||
Inattentive | 10 | 47.7 | 10 | 47.7 | n.s | ||||
Hyperactive | 3 | 14.3 | 3 | 14.3 | |||||
Combined | 8 | 38.1 | 8 | 38.1 | |||||
IQ score | 21 | 124 (3.2) | 21 | 124 (3.2) | 21 | 97.2 (4.2) | 21 | 97.2 (4.2) | n.s* |
Age in years | 21 | 11.18 (0.6) | 21 | 11.11 (0.42) | 21 | 11.15 (0.42) | 21 | 11.20 (0.48) | n.s |
Gender | |||||||||
Male | 17 | 81 | 17 | 81 | 17 | 81 | 17 | 81 | n.s |