Is age of self-harm onset associated with increased frequency of non-suicidal self-injury and suicide attempts in adolescent outpatients?

Table 4 Fitted two-component hurdle model for first suicide attempt (logit link) and repeated suicide attempts (SA) (log link) with age of self-harm onset, duration of self-harm and selected covariates, in adolescents with repetitive self-harm (N = 103)

	First suicide attempt
	Estimate	St. Error	z value	p-value	95% CI
(Intercept)	−2.04	0.54	−3.78	***	−3.10	− 0.98
Borderline Symptoms (BSL-23)	0.05	0.01	3.77	***	0.02	0.07
Age of onset	−0.67	0.21	−3.20	**	−1.09	−0.26
Duration before first SA	−0.63	0.20	−3.25	**	−1.02	−0.25
Age of onset x Duration before first SA (Interaction)	−0.19	0.08	−2.37	*	−0.34	−0.03
	Repeated suicide attempts
	Estimate	Std. Error	z value	p-value	95% CI
(Intercept)	−5.64	0.95	−5.97	***	−7.50	−3.80
Borderline Symptoms (BSL-23)	0.04	0.01	4.03	***	0.02	0.07
Sexual abuse	1.13	0.52	2.19	*	0.12	2.15
Duration before first SA	−0.09	0.12	−0.74	n.s	−0.33	0.15
Duration before first SA - squared (interaction)	0.15	0.078	1.89	0.059	−0.01	0.30

ISSN: 1471-244X