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. 2021 Jun 2;18(11):5965. doi: 10.3390/ijerph18115965

Table 3.

Related factors with non-suicidal self-injury among adolescents in South Korea.

Variables/Category NSSI/No NSSI Model 1 Model 2 Model 3
OR (95% CI) OR (95% CI) OR (95% CI)
Gender
Male 45/919 1.0 1.0 1.0
Female 118/761 3.14 (2.20–4.49) 3.49 (2.41–5.03) 2.73 (1.87–3.99)
School level
High school 56/756 1.0 1.0 1.0
Middle school 107/924 1.53 (1.09–2.15) 1.47 (1.03–2.08) 1.48 (1.03–2.13)
School grades
High 27/222 1.56 (0.93–2.62) 1.74 (1.02–2.98) 1.67 (0.95–2.92)
Medium-High 38/448 1.00 (0.63–1.58) 1.04 (0.65–1.66) 1.08 (0.67–1.76)
Medium 43/524 1.0 1.0 1.0
Medium-Low 37/345 1.37 (0.86–2.19) 1.31 (0.81–2.10) 1.16 (0.71–1.90)
Low 18/141 1.77 (0.98–3.20) 1.48 (0.80–2.75) 1.14 (0.60–2.16)
Economic status
High 14/220 1.0 1.0 1.0
Medium-High 51/514 1.37 (0.74–2.55) 1.63 (0.86–3.09) 1.80 (0.93–3.49)
Medium 74/810 1.26 (0.69–2.29) 1.45 (0.77–2.72) 1.50 (0.79–2.86)
Medium-Low/Low 24/136 2.71 (1.34–5.50) 2.78 (1.33–5.85) 2.44 (1.13–5.28)
Bullying victim
No 153/1347 1.0 1.0 1.0
Yes 10/33 3.39 (1.60–7.21) 3.34 (1.55–7.22) 1.79 (0.81–3.93)
Gaming disorder
No 127/1490 1.0 1.0 1.0
Yes 36/190 2.58 (1.71–3.91) 2.14 (1.60–3.71) 1.87 (1.20–2.92)
Depressive symptom
No 53/1288 1.0 1.0
Yes 110/392 6.14 (4.32–8.73) 5.48 (3.81–7.89)

Model 1: Adjusted for gender, school level; Model 2: Adjusted for Model 1 + school grades, economic status, bullying victim and gaming disorder; Model 3: Adjusted for Model 2 + depressive symptom.