Table 7.

Direct and indirect effects of internet use on NSSI through mental disorders.

PIU—Mental disorders—NSSI mediation	Effect	SE	t	p	Bootstrapping 95% CI
Mediator variable: Affective disorder
Direct effect	−.005	.068	−.067	.947
Indirect effect	.188*	.042			.119,.284
Mediator variable: Anxiety disorder
Direct effect	.061	.068	.889	.374
Indirect effect	.122*	.042			.050,.220
Mediator variable: OCD
Direct effect	.116	.071	1.643	.101
Indirect effect	.067	.031			.018,.114
Mediator variable: ADHD
Direct effect	.092	.075	1.229	.220
Indirect effect	.099*	.029			.053,.171
Mediator variable: CD and ODD
Direct effect	.077	.074	1.048	.295
Indirect effect	.144*	.033			.059,.191
Mediator variable: Alcohol abuse and dependence
Direct effect	.155	.075	2.074	.038
Indirect effect	.051	.030			.007,.124
Mediator variable: Psychoactive substance abuse and dependence
Direct effect	.107	.071	1.515	.131
Indirect effect	.081*	.033			.029,.163
Mediator variable: Psychotic disorder
Direct effect	.075	.068	1.105	.270
Indirect effect	.116*	.037			.056,.204
Mediator variable Suicidality
Direct effect	.034	.065	.524	.601
Indirect effect	.149*	.046			.072,.255
Mediator variable Adjustment disorder
Direct effect	.165	.076	2.179	.030
Indirect effect	.032	.023			.001,.096

**p <. 001.

*p < .005.

Effect—unstandardized regression coefficients, SE—standard error of the unstandardized regression coefficients, Bootstrapping 95% CI—95% confidence interval, Number of bootstrap resample: 5,000.

Bonferroni correction was applied to the control for multiple comparison. (p = 0.05/10 = 0.005, p = 0.01/10 = 0.001).