Contributors to nonsuicidal self-injury in incarcerated youth

Health & Justice

Table 4 Multivariate regressions predicting nonsuicidal self-injury (NSSI) for overall sample and stratified by gender

	Predicting lifetime NSSI (vs no self-injury)
	Overall (n = 356)		Males (n = 241)		Females (n = 115)
Nagelkerke R² (%)	27.6		27.4		35.4
	OR	95% CI	OR	95% CI	OR	95% CI
Age (in years)	0.81*	[0.69, 0.96]	0.74**	[0.60, 0.90]	1.03	[0.75, 1.40]
White (vs non-white)	2.77***	[1.59, 4.82]	3.02**	[1.42, 6.43]	3.44*	[1.34, 8.80]
Major Depressive Disorder	2.60	[0.92, 7.39]	4.29*	[1.16, 15.88]	0.98	[0.16, 6.08]
Lifetime suicide attempt	7.17***	[2.95, 17.40]	7.02***	[2.22, 22.23]	7.36*	[1.60, 33.77]
Traumatic exposure
Forced sexual activity	2.37*	[1.18, 4.76]	1.32	[0.37, 4.73]	4.89*	[1.44, 16.55]
Nonsexual assault	1.85*	[1.05, 3.24]	2.73**	[1.31, 5.69]	0.70	[0.21, 2.34]
	Predicting lifetime nonsuicidal cutting (vs no self-injury)
	Overall (n = 313)		Males (n = 214)		Females (n = 99)
Nagelkerke R² (%)	36.0		41.1		40.3
Age (in years)	0.78*	[0.62, 0.97]	0.67**	[0.51, 0.89]	1.00	[0.68, 1.46]
White (vs non-white)	8.03***	[3.30, 19.54]	22.82***	[3.90, 133.39]	7.76**	[2.19, 27.45]
Major Depressive Disorder	2.39	[0.56, 10.27]	12.21*	[1.52, 97.74]	0.59	[0.07, 5.32]
Lifetime suicide attempt	9.77***	[3.46, 27.63]	10.99***	[2.90, 41.61]	10.81*	[1.69, 69.01]
Traumatic exposure
Forced sexual activity	2.34	[0.93, 5.90]	0.59	[0.09, 3.86]	3.96	[0.87, 18.00]
Nonsexual assault	1.85	[0.86, 3.98]	2.78	[0.98, 7.87]	1.18	[0.28, 5.06]

Note. OR odds ratio, CI confidence interval; *p < .05. **p < .01. ***p < .001

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