Table 1. Demographic and clinical characteristics of the study groups.
| ASC (N=43) | Siblings (N=38) | Controls (N=40) | Group differences | |
|---|---|---|---|---|
| Age (years) | 14.52±1.74 | 14.99±2.13 | 15.06±1.63 | Not significant |
| Gender (M/F) | 28/15 | 12/26 | 20/20 | No significant difference between controls and the other two groups Significant difference between ASC and siblings; P=0.002 |
| Wechsler Abbreviated Scale of Intelligence | 104.65±14.57 | 113.63±9.95 | 112.38±11.12 | No significant difference between siblings and controls Significant differences between: ASC < Siblings; P=0.003 ASC < Controls; P=0.012 |
| Social Communication Questionnaire | 25.03±5.5 | 1.6±2.19 | 2.2±2.33 | No significant difference between siblings and controls Significant differences between: ASC > Siblings; P<0.001 ASC > Controls; P<0.001 |
| Autism Spectrum Quotient | 38.59±6.72 | 8.61±5.63 | 9.1±5.59 | |
| Social Responsiveness Scale | 112.85±31.13 | 17.22±12.34 | 15.43±11.4 |
Abbreviations: ASC, autism spectrum condition; F, female; M, male. Interval measurements are presented as a group mean with s.d. The significance of differences between the groups means in every measurement was calculated with t-tests for each pair of the groups.