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. 2025 Jul 2;15:23097. doi: 10.1038/s41598-025-08423-2

Table 2.

Frequency of Self-Injurers and method.

Method of NSSI Frequency (%)
MDD(n = 166) Health(n = 101)
1. Cutting or carving on skin 99(59.63) 11(10.89)
2. Picking at a wound 13(7.83) 2(1.98)
3. Hitting self 14(8.43) 2(1.98)
4. Scraping skin to draw blood 61(36.75) 6(5.94)
5. Biting self 57(34.34) 3(2.97)
6. Picking areas of the body to the point of drawing blood 100(60.24) 13(12.87)
7. Inserting objects under skin or nails 94(56.63) 10(9.90)
8. Tattooing self 10(6.02) 2(1.98)
9. Burning skin 5(3.01) 2(1.98)
10. Pulling out one’s own hair 6(3.61) 2(1.98)
11. Erasing skin to draw blood 54(32.53) 3(2.97)
12. Rubbed sandpaper on your body 35(21.08) 4(3.96)
13. Used bleach, comet, or even cleaner to scrub your skin 4(2.41) 1(0.99)
14. Banged your head against something 63(37.95) 3(2.97)
15. Prevented wound from healing 65(39.16) 1(0.99)
16. Broken your own bones 86(51.81) 8(7.92)
17. Others 67(40.36) 4(3.96)