Effects of impulsive personality on suicide in adolescent depression: The chain mediating of perceived social adversity and security

Table 1 Basic information of research objects (n = 200)

Variables	Categories	n	Proportion (%)
Gender	Female	96	48.00
	Male	104	52.00
Age (years)	12-15	76	38.00
	15-18	124	62.00
Grade level	Junior high school	76	38.00
	Senior high school	124	62.00
Only child	No	98	49.00
	Yes	102	51.00
Monthly household income (yuan)	< 2000	55	27.50
	2000-5000	76	38.00
	> 5000	69	19.50
Family history of depression	No	155	77.50
	Yes	45	22.50
Parental marital status	At marriage	101	50.50
	Divorced/widowed	99	49.50

Table 2 Gender differences in suicide risk, impulsive personality, sense of security, and perceived chronic social adversity (mean ± SD)

Variables	Male	Female	t	P value
Suicidal ideation	6.81 ± 0.64	6.79 ± 0.71	0.168	0.867
Suicidal tendency	18.06 ± 3.28	17.89 ± 2.94	0.390	0.697
Suicide risk	24.87 ± 3.39	24.68 ± 3.06	0.412	0.681
Cognitive impulse	35.48 ± 3.74	35.82 ± 3.39	0.677	0.499
Motor impulsivity	31.76 ± 3.00	31.51 ± 3.37	0.553	0.581
Unplanned impulsivity	39.98 ± 3.84	40.24 ± 4.26	0.451	0.652
Impulsive personality	107.22 ± 5.93	107.57 ± 6.2	0.409	0.683
Interpersonal security	22.54 ± 3.82	22.99 ± 3.44	0.875	0.382
Definite sense of control	17.53 ± 3.29	17.90 ± 3.10	0.810	0.419
Sense of security	40.08 ± 4.49	40.89 ± 4.60	1.257	0.210
PCSA	59.06 ± 6.54	58.27 ± 5.84	0.894	0.372

PCSA: Perceived chronic social adversity.

Table 3 Correlation analysis of suicide risk, impulsive personality, sense of security and perceived chronic social adversity (r)

Variables	Suicide risk	Impulsive personality	Sense of security	PCSA
Suicide risk	1	-	-	-
Impulsive personality	0.239b	1	-	-
Sense of security	-0.244b	-0.277b	1	-
PCSA	0.230b	0.271b	-0.250b	1

^bP < 0.01.

PCSA: Perceived chronic social adversity.

Table 4 Regression analysis of intermediate variables

	PCSA		Sense of security		Suicide risk
	β	t	β	t	β	t
Impulsive personality	0.278c	3.957	-0.169c	-3.229	0.082a	2.145
PCSA			-0.139b	-2.711	0.076a	2.065
Sense of security					-0.116a	-2.301
R2	0.271		0.331		0.333
F	15.658		12.151		8.136

^aP < 0.05.

^bP < 0.01.

^cP < 0.001.

PCSA: Perceived chronic social adversity.

Table 5 Mediating effect analysis between perceived chronic social adversity and sense of security

Variables	Effect size	SE	95%CI	Effect ratio (%)
Total effect	0.127	0.037	0.055-0.200	-
Direct effect	0.082	0.038	0.007-0.157	64.57
Total indirect effect	0.045	0.018	0.015-0.082	35.43
Impulsive personality→PCSA→suicide risk	0.021	0.013	0.001-0.050	16.53
Impulsive personality→sense of security→suicide risk	0.020	0.011	0.002-0.045	15.75
Impulsive personality→PCSA→sense of security→suicide risk	0.004	0.003	0.001-0.013	3.15

PCSA: Perceived chronic social adversity.