Table 1.
Demographic characteristics of the study sample
| 22q11DS (n = 25) |
iASD (n = 28) |
Statistics | |
|---|---|---|---|
| Sex (M/F) | 18/6 | 22/6 | χ² (0.30), p = 0.58 |
| Age, years | 5.57 (1.55) | 4.94 (1.30) | t (1.51) = 1.60, p = 0.12 |
| Age range, years | 3–8 | 3–8 | |
| Full-scale IQ (SD) | 87. 72 (16.05) | 74.29 (24.28) | t (1.51) = 2.39, p = 0.02 |
| Mother’s education | χ² = 3.67, p = 0.30 | ||
| Elementary school | 0 (0%) | 1 (3.6%) | |
| High school | 8 (34.8%) | 4 (14.3%) | |
| Vocational | 2 (8.7%) | 4 (14.3%) | |
| Academic degree | 13 (56.5%) | 19 (67.9%) | |
| ADOS-2 modules | |||
| 1 | 3 (12.0%) | 7 (25.0%) | |
| 2 | 11 (44.0%) | 8 (28.6%) | |
| 3 | 11 (44.0%) | 13 (46.4%) | |
| Intelligence measures | |||
| WPSSI-III | 4 (16.0%) | 9 (32.1%) | |
| Short WPPSI | 15 (60.0%) | 1 (3.6%) | |
| Mullen | 1 (4.0%) | 16 (57.1%) | |
| Short WISC-IV | 4 (16.0%) | 2 (7.1%) | |
| Bayley-IV | 1 (4.0%) | 0 (0%) |
Abbreviations: 22q11DS: 22q11 deletion syndrome; iASD: idiopathic autism; ADOS-2: autism diagnostic observational schedule; WPSSI: wechsler preschool and primary scale of intelligence; WISC: wechsler intelligence scale for children.