Protective role of perceived social support against adolescent self-injury addiction: Serial mediation of negative emotion and impulsivity

Table 4 Chain mediating effects of depression (the Self-rating Depression Scale) or anxiety (the Self-rating Anxiety Scale) and impulsivity (the Barratt Impulsiveness Scale) in the associations between perceived social support (by the Multidimensional Scale of Perceived Social Support) and self-injury addiction (the Addiction Subscale of the Revised Chinese Version of Ottawa Self-injury Inventory) in adolescents with non-suicidal self-injury behaviors (n = 102)

Variables	Effects	SE	P value	BC bootstrap 95%CI		Effect proportion (%)	Power (%)
				Lower	Upper
Model A: MSPSS - SAS - BIS-11 - ROSI-addiction							20.9
The total effect of MSPSS - ROSI-addiction	-0.35	0.11	0.002	-0.88	-0.19	100.0
The direct effect of MSPSS - ROSI-addiction	-0.19	0.10	0.057	-0.39	<0.01	54.3
The indirect effect of
Ind1: MSPSS - SAS - ROSI-addiction	-0.11	0.05	0.007	-0.24	-0.03	31.4
Ind2: MSPSS - BIS-11 - ROSI-addiction	-0.03	0.04	0.300	-0.15	0.04	8.6
Ind3: MSPSS - SAS - BIS-11 - ROSI-addiction	-0.02	0.02	0.025	-0.10	> -0.01	5.7
Model B: MSPSS - SDS - BIS-11 - ROSI-addiction							38.6
The total effect of MSPSS - ROSI-addiction	-0.35	0.11	0.002	-0.56	-0.12	100.0
The direct effect of MSPSS - ROSI-addiction	-0.18	0.12	0.138	-0.43	0.06	51.4
The indirect effect of
Ind1: MSPSS - SDS - ROSI-addiction	-0.11	0.06	0.016	-0.26	-0.02	31.4
Ind2: MSPSS - BIS-11 - ROSI-addiction	-0.02	0.05	0.512	-0.13	0.06	5.7
Ind3: MSPSS - SDS - BIS-11 - ROSI-addiction	-0.04	0.03	0.021	-0.15	> -0.01	11.4

BC: Bias-corrected; 95%CI: 95% confidence interval; MSPSS: Multidimensional Scale of Perceived Social Support; SAS: Self-Rating Anxiety Scale; BIS-11: Barratt Impulsiveness Scale; ROSI-addiction: Addiction subscale of the Revised Chinese Version of Ottawa Self-injury Inventory; SDS: Self-Rating Depression Scale.