Table 6.
Behavioural Characteristics in 101 PTHS Individuals
| Behaviour | Percent | |
|---|---|---|
| Unusual behaviour during feeding | 40.4 % | |
| Sleep problems | No longer periods of sleep/frequently awake at night | 4.4 % |
| Other sleep problems | 4.4 % | |
| Problems falling asleep | Previously | 12.1 % |
| Currently | 17.6 % | |
| Problems sleeping the whole night through | Previously | 13.6 % |
| Currently | 33.0 % | |
| Night terrors | Previously | 6.6 % |
| Currently | 5.5 % | |
| Hand biting | Previously | 11.4 % |
| Currently | 58.0 % | |
| Mean age of start | 4.2 years (range 0–23 years) | |
| Teeth grinding | Previously | 28.9 % |
| Currently | 46.7 % | |
| Mean age of start | 2.8 years (range 0–12 years) | |
| Clapping/flashing/hand washing | Previously | 9.0 % |
| Currently | 80.9 % | |
| Mean age of start | 1.7 years (range 0–15 years) | |
| Repetitive movements | Previously | 4.4 % |
| Currently | 66.7 % | |
| Mean age of start | 3.3 years (range 0.2–12 years) | |