Table 2. Demographic data of the participants.
| ADHD (n = 22) | ASD (n = 18) | TD (n = 17) | Between-group difference | Post hoc | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| M/F | M/F | M/F | χ2 | df | p | |||||
| Sex | 16/6 | 16/2 | 12/5 | 2.07 | 2 | 0.36 | ns | |||
| M | SD | M | SD | M | SD | H | df | p | ||
| Age (months) | 122 | 18.51 | 125.11 | 16.29 | 126.12 | 19.48 | 0.59 | 2 | 0.74 | ns |
| IQ | 100.23 | 13.74 | 100.22 | 16.73 | 118.59 | 14.93 | 12.44 | 2 | 0.002 | ADHD, ASD<TD |
| ADHD RS-IV | ||||||||||
| Total | 33.91 | 9.96 | 21.94 | 8.71 | 7.35 | 4.8 | 37.31 | 2 | <0.001 | ADHD>ASD>TD |
| Inattention | 19.27 | 4.38 | 13.67 | 6.71 | 4.18 | 2.67 | 32.66 | 2 | <0.001 | ADHD, ASD>TD |
| Hyperactivity-Impulsivity | 14.64 | 7.32 | 8.28 | 4.16 | 3.18 | 3.4 | 25.38 | 2 | <0.001 | ADHD, ASD>TD |
ADHD: Attention-Deficit/Hyperactivity Disorder; ASD: Autism Spectrum Disorder; TD: typically developing; M/F: Male/Female; χ2: Pearson’s Chi-squared test; M: mean; SD: Standard deviation; H: test statistic for the Kruskal-Wallis test; df: degrees of freedom; p: p-value; ns: not significant; ADHD RS-IV: ADHD Rating Scale-IV.