Table 2.
Group differences in characteristics of NSSI behaviors
| Variables | NSSI+SA (N=27) | NSSI (N=14) | Total (N=41) | F or χ2 | p |
|---|---|---|---|---|---|
| Age of onset | 15.82 (4.05) | 19 (4.62) | 16.88 (4.44) | 4.115 | 0.051 |
| Methods of NSSI | |||||
| Complex | 9 (33.3) | 3 (21.4) | 12 (29.3) | 1.347 | 0.510 |
| Cutting | 18 (66.7) | 7 (50) | 25 (61) | 1.076 | 0.300 |
| Scratching | 4 (14.8) | 0 (0) | 4 (9.8) | 2.298 | 0.130 |
| Hitting | 5 (18.5) | 2 (14.3) | 7 (17.1) | 0.117 | 0.733 |
| Drug | 3 (11.1) | 2 (14.3) | 5 (12.2) | 0.087 | 0.768 |
| Etc | 4 (14.8) | 1 (7.1) | 5 (12.2) | 0.507 | 0.477 |
| Not applicable | 3 (11.1) | 4 (28.6) | 7 (17.1) | 1.985 | 0.159 |
| Total number of NSSI methods (single:multiple) | 15:9 | 7:3 | 22:12 | 0.174 | 0.677 |
NSSI: non-suicidal self-injury, SA: suicide attempts