Table 2.
Demographic characteristics, autism severity and age of diagnosis compared between autistic participants who do and do not engage in self-harm
| Self-harm | No self-harm | U/χ2 | p value | |
|---|---|---|---|---|
| N | 20 | 63 | ||
| Age (years) | ||||
| Mean | 13.60 | 14.30 | 627.50 | .98 |
| (SD) | (4.36) | (6.70) | ||
| Range | 7–23 | 4–45 | ||
| Age (Categories) | ||||
| % ≤ 11 | 25 | 39.68 | 3.95 | .14 |
| % 12–18 | 60 | 34.92 | ||
| % > 18 | 15 | 25.40 | ||
| Gender | ||||
| % male | 75 | 82.5 | N/Aa | .52 |
| Mobility | ||||
| % mobile | 100 | 96.83 | N/Aa | 1.00 |
| Speech | ||||
| % verbal | 95b | 100 | N/Aa | .24 |
| SCQ total scores | ||||
| Mean | 25.86 | 24.33 | 507.00 | .19 |
| (SD) | (4.80) | (4.88) | ||
| Range | 15–33.4 | 15–34 | ||
| Score 22 above on SCQ | ||||
| % above 22 | 90 | 65.08 | 4.59 | .03 |
| Age of diagnosis (months) | ||||
| Mean | 102.11b | 86.02 | 480.00 | .19 |
| (SD) | (63.49) | (71.66) | ||
| Range | 24–240 | 24–444 | ||
Chi Square and Mann–Whitney U tests were employed to detect significant differences (p < .01). All analyses were two-tailed
aFishers exact t calculated as 1 or more cells had expected count < 5
bN = 19 as missing data for Self-harm group