Table 1.
Demographic characteristics and clinical features of ASD sample and subgroups.
| Total (N 69) | NO-TTB (n 46) | TTB (n 23) | TTB Class 1 (n 10) | TTB Class 2 (n 8) | TTB Class 3 (n 5) | |
|---|---|---|---|---|---|---|
| Age - mean (SD) | 14.10 (3.61) | 14.91 (3.69) | 12.42 (2.85) | 11.62 (3.29) | 12.77 (2.39) | 13.45 (2.70) |
| ADOS CSS - mean (SD) | 7.99 (1.71) | 7.74 (1.71) | 8.48 (1.65) | 9.00 (1.41) | 7.63 (1.69) | 8.8 (1.79) |
| Intellectual disability – mild (n° subjects) (%) | 2 (2.9%) | 1 (2.2%) | 1 (4.3%) | 1 (10%) | 0 | 0 |
| Intellectual disability – moderate (n° subjects) (%) | 4 (5.8%) | 3 (6.5%) | 1 (4.3%) | 0 | 0 | 1 (20%) |
| Intellectual disability – severe (n° subjects) (%) | 15 (21.7%) | 13 (28.3%) | 2 (8.7%) | 1 (10%) | 1 (12.5%) | 0 |
| Intellectual disability – profound (n° subjects) (%) | 48 (69.6%) | 29 (63%) | 19 (82.6%) | 8 (80%) | 7 (87.5%) | 4 (80%) |
Note. TTB = tip-toe behavior; SD = standard deviation; ADOS CSS = ADOS Calibrated Severity Score.