Table 1.
variable | NSSI, % or mean (s.d.) | Control, % or mean (s.d.) |
---|---|---|
any mental health diagnosis | 59.0% | 12.0% |
depressive disorders | 52.0% | 5.0% |
anxiety disorders | 40.0% | 4.0% |
eating disorders | 16.0% | 5.0% |
trauma and stressor related disorders | 12.0% | — |
obsessive compulsive and related disorders | 8.0% | 2.0% |
neurodevelopmental disorders | 5.0% | — |
personality disorders | 4.0% | — |
schizophrenia spectrum and other psychotic disorders | 2.0% | — |
any prescribed medication(s) | 43.0% | 18.0% |
contraceptive | 17.0% | 11.0% |
physical health medication (e.g. asthma) | 19.0% | 4.0% |
antidepressant | 18.0% | 2.0% |
anxiolytic | 2.0% | — |
antipsychotic | 3.0% | 1.0% |
lifetime number of NSSI methods | 5.15 (2.32) | 0 |
lifetime NSSI frequencya | 100% | 0% |
1–3 | 6.1% | — |
4–5 | 11.1% | — |
6–10 | 11.1% | — |
11–20 | 8.1% | — |
21–50 | 24.2% | — |
50+ | 39.4% | — |
past-year NSSI frequency | 100% | 0% |
1–3 | 36.0% | — |
4–5 | 11.0% | — |
6–10 | 15.0% | — |
11–20 | 20.0% | — |
21–50 | 13.0% | — |
50+ | 5.0% | — |
Note. NSSI = Non-suicidal self-injury.
aOne participant in the NSSI group did not report the lifetime frequency of their NSSI.