Behavioural phenotype
| Behavioural trait | No of children |
| Poor social interaction | 30 (53%) |
| Poor communication skills | 28 (49%) |
| Short attention span | 26 (46%) |
| Insistence on routines | 25 (44%) |
| Hand flapping | 14 (25%) |
| Gaze avoidance | 15 (26%) |
| Aggressive or violent | 11 (19%) |
| No sense of danger | 3 (5%) |
| Total patients | 57 |