Table 2.
Frequency of ADHD subtypes and symptoms of inattention and hyperactivity/impulsivity in each of the ASD subtypes
| Autistic disorder (N=5) |
Asperger's disorder (N=67) |
PDD NOS (N=50) |
AS – PDD NOSa | Total (N=122) |
Male (N=82) |
Female (N=40) |
Male – Femalea | |||||||||
| N | % | N | % | N | % | χ2 (df = 1) |
p | N | % | N | % | N | % | χ2 (df = 1) |
p | |
| Inattentive subtype | 2 | 40 | 8 | 12 | 11 | 22 | 2.13 | 0.21 | 21 | 17 | 14 | 17 | 7 | 18 | 0.00 | 1.00 |
| Hyperactive/impulsive subtype | 0 | 0 | 5 | 8 | 3 | 6 | 0.10 | 1.00 | 8 | 7 | 5 | 6 | 3 | 8 | 0.09 | 0.72 |
| Combined subtype | 0 | 0 | 11 | 16 | 12 | 24 | 1.04 | 0.35 | 23 | 19 | 16 | 20 | 7 | 18 | 0.07 | 1.00 |
| Any ADHD | 2 | 40 | 24 | 36 | 26 | 52 | 3.06 | 0.09 | 52 | 43 | 35 | 43 | 17 | 43 | 0.00 | 1.00 |
| AS – PDD NOSb | Male – Femaleb | |||||||||||||||
| Z | p | Z | p | |||||||||||||
| Median and range of inattentive criteria met | 4 (0–7) |
3 (0–8) |
6 (0–9) |
-2.52 | 0.01 | 4 (0–9) |
4 (0–9) |
3 (0–9) |
-0.49 | 0.63 | ||||||
| Median and range of hyperactive/impulsive criteria met | 2 (0–7) |
1 (0–9) |
3 (0–9) | -2.69 | 0.007 | 2 (0–9) |
2 (0–9) |
2 (0–9) |
-0.89 | 0.37 | ||||||
aFisher's exact χ2 test; bMann-Whitney U test