Table 3. Logistic regression models investigating longitudinal risk and protective factors for persistent DSH.

PERSISTENT DSH (n=133)
HIERARCHICAL MULTIVARIATE MODELS
	Model 1		Model 2		Model 3		Model 4
Established risk and protective factors (T1)	OR [95% CI]	p	OR [95% CI]	p	OR [95% CI]	p	OR [95% CI]	p
Grade 7 (referent: grade 9)	1.01 [.41, 2.48]	.981	.99 [.39, 2.51]	.976	1.08 [.40, 2.94]	.874	1.08 [.38, 3.03]	.887
Female Gender (referent: male)	1.87 [.74, 4.80]	.178	1.84 [.69, 4.91]	.218	1.47 [.55, 3.99]	.440	1.47 [.54, 3.99]	.444
Washington State (referent: Victoria)	.58 [.25, 1.35]	.201	.73 [.26, 2.05]	.551	.64 [.19, 2.11]	.456	.64 [.19, 2.21]	.478
Substance use
Alcohol use classification (referent: no use)
No recent alcohol use			.94 [.15, 6.01]	.949	.93 [.13, 6.86]	.943	.87 [.11, 6.80]	.897
Recent alcohol use			1.87 [.33, 10.70]	.478	1.78 [.26, 12.11]	.552	1.76 [.25, 12.46]	.570
Binge drinking			2.01 [.31, 12.89]	.456	2.27 [.32, 16.03]	.407	2.16 [.30, 15.59]	.442
Current Cannabis Use			.74 [.18, 3.04]	.670	.64 [.11, 3.68]	.618	.63 [.10, 3.89]	.615
Current Tobacco Use			.97 [.36, 2.62]	.957	.85 [.28, 2.55]	.767	.79 [.25, 2.48]	.689
Individual factors
Emotional Control (P)					.90 [.51, 1.58]	.708	.91 [.50, 1.65]	.753
Bullying victimization					.89 [.65, 1.22]	.458	.88 [.64, 1.21]	.428
Antisocial Behavior					1.23 [.30, 5.09]	.772	1.18 [.26, 5.37]	.827
Depressive Symptoms					3.88 [1.42, 10.56]	.009	3.68 [1.33, 10.19]	.013
Impulsivity					.87 [.33, 2.28]	.772	.79 [.29, 2.17]	.643
Family factors
Family Conflict							1.22 [.71, 2.11]	.464
Parent Overcontrol							.90 [.53, 1.53]	.691
Poor Family Management							1.04 [.46, 2.36]	.930

Note. OR = odds ratio, CI = confidence interval.

DSH = deliberate self-harm, (P) Protective factor

Grade 7 (coded 0 = grade 7, 1 = grade 9 [69.70%]), Female gender (coded 0 = male, 1 = female [78.79%]), Washington State (coded 0 = Victoria, 1 = Washington State [30.30%])