Table 2.

Each item scores of the NSSI functional scale

Items	mean ± SD
F1. Express anger	3.274 ± 1.142
F2. To avoid things that I do not like or makes myself unhappy (such as going to school, doing homework, or working)	3.206 ± 1.270
F3. Make myself feel less lonely	2.767 ± 1.209
F4. Relieve stress or anxiety	3.890 ± 1.121
F5. Ways of self-punishment	3.308 ± 1.300
F6. Can bring happiness, enjoyment, and make myself feel good	2.904 ± 1.315
F7. Control myself to calm down	3.507 ± 1.222
F8. Attracting others’ attention	2.144 ± 1.108
F9. Revenge others	1.911 ± 1.043
F10. Only in this way can I avoid harming others	3.048 ± 1.430
F11. Protect myself from others’ attacks	2.322 ± 1.237
F12. help myself stop negative thoughts	3.220 ± 1.295
F13. My friends have done this before	2.027 ± 1.095
F14. Having a desire to harm myself and cannot stop	3.404 ± 1.235
F15. Gaining others’ understanding	2.329 ± 1.145
F16. Coping with sadness and disappointment	3.815 ± 1.024
F17. Expressing my despair and hopelessness	3.315 ± 1.264
F18. Letting others make changes	2.363 ± 1.150
F19. Escaping from numbness and illusion	2.959 ± 1.264