Table 7 Percentage occurrence of self injury topographies among the RTT and contrast group who self-injure
From: A national survey of Rett syndrome: behavioural characteristics
RTT | Contrast | Mann Whitney | |||
|---|---|---|---|---|---|
( n = 24) | ( n = 18) | U | z | P value | |
Hit self with body part | 33.3% | 55.6% | 1,278.0 | −3.52 | .001 |
Hit self against surface | 12.5% | 38.9% | 1,393.0 | −3.37 | .001 |
Hit self with object | − | 50% | 903.0 | −6.91 | .001 |
Bites self | 33.3% | 50% | 1,063.0 | −4.85 | .001 |
Pull hair/skin | 20.8% | 44.4% | 1,175.0 | −4.51 | .001 |
Rub/scratches | 45.8% | 33.3% | 1,444.0 | −2.13 | .033 |
Insert objects | 4.1% | 16.7% | 1,568.0 | −2.36 | .018 |