Table 2.
Self-harm histories by offender group
| Total Sample (n = 2114) |
ChildSO (n = 77) |
AdultSO (n = 160) |
PolySO (n = 43) |
Violent (n = 1269) |
Non-sexual non-violent (n = 552) |
X2 | p (Φ/ ΦC) | |
|---|---|---|---|---|---|---|---|---|
| Ever self-harmed | ||||||||
| 0 No | 86.8% | 89.2% | 85.7% | 0 | 84.7% | 90.3% | 17.000** | .002 (.09) |
| 1 Yes | 13.2% | 10.8% | 14.3% | 15.3% | 9.7% | |||
| Number of times | 7.180+ | .066 (.17) | ||||||
| 1 Once | 44.7% | 57.1% | 52.4% | – | 39.3% | 58.8% | ||
| 2 Twice or more | 55.3% | 42.9% | 47.6% | – | 60.7% | 41.2% | ||
| Self-harmed in prison | ||||||||
| 0 No | 71.5% | 57.1% | 71.4% | – | 72.4% | 70.6% | .798 | .850 (.06) |
| 1 Yes | 28.5% | 42.9% | 28.6% | 27.6% | 29.4% | |||
| Planned self-harm | ||||||||
| 0 No | 60.3% | 57.1% | 47.4% | – | 61.6% | 61.2% | 1.496 | .683 (.08) |
| 1 Yes | 39.7% | 42.9% | 52.6% | 38.4% | 38.8% | |||
| Method of last self-harm | 21.943* | .038 (.17) | ||||||
| 1 Choke-inducing behaviours | 3.1% | 0 | 19.0% | – | 1.7% | 2.0% | ||
| 2 Impact with object | 15.8% | 14.3% | 9.5% | – | 16.7% | 15.7% | ||
| 3 Overdose or poisoning | 4.2% | 0 | 0 | – | 4.4% | 5.9% | ||
| 4 Use of an object | 73.7% | 85.7% | 66.7% | – | 74.4% | 72.5% | ||
| 5 Other | 3.1% | 0 | 4.8% | – | 2.8% | 3.9% | ||
| More likely to self-harm in prison than community | ||||||||
| 0 No | 69.0% | 57.1% | 71.4% | – | 68.4% | 71.4% | 3.475 | .747 (.12) |
| 1 Yes | 31.0% | 42.9% | 28.6% | 31.6% | 28.6% | |||
The information in this table is based the self-reported survey data. The sample size in this table reflect the number of participants who were able to be coded on each item. Some responses could not be coded because of the amount and quality of the information. The sample sizes ranged from ChildSOs: 31–77; AdultSOs: 69–160; PolySOs: 21–43; Violent: 523–1269; Non-sexual non-violent offenders: 232–552
+p < .10, * p < .05, **p < .01