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. 2023 Mar 8;10(3):221100. doi: 10.1098/rsos.221100

Table 1.

Participant clinical characteristics, separated by non-suicidal self-injury status.

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.