Work-family behavioral role conflict and daytime sleepiness on suicide risk among Chinese nurses: A cross-sectional study

Table 1 Comparison of suicide risk scores for nurses with different demographics, n (%)

Variables	Type	Value	Score (mean ± SD)	t/F	P value
Sex	Male	244 (32.5)	2.20 ± 2.37	1.56	0.120
	Female	506 (67.5)	1.92 ± 2.11
Age (years)	≤ 25	94 (12.5)	2.11 ± 2.27	3.702	0.012
	26-35	479 (63.9)	2.13 ± 2.25
	36-45	141 (18.8)	1.82 ± 2.03
	> 45	36 (4.8)	0.94 ± 1.57
Educational level	Associate degree	113 (15.1)	2.12 ± 2.21	0.403	0.669
	Bachelor degree	626 (83.5)	1.98 ± 2.20
	Graduate degree or above	11 (1.5)	2.45 ± 2.16
Marital status	Unmarried	238 (31.7)	2.15 ± 2.16	1.119	0.327
	Married	499 (66.5)	1.96 ± 2.23
	Divorce or widow	13 (1.7)	1.38 ± 1.56
Years of work	< 1	15 (2.0)	1.80 ± 1.86	2.526	0.056
	1-5	232 (30.9)	2.33 ± 2.30
	6-10	193 (25.7)	1.93 ± 2.20
	> 10	310 (41.3)	1.83 ± 2.11
Title	Junior nurse	118 (15.7)	1.85 ± 1.99	0.941	0.420
	Intermediate nurse	312 (41.6)	2.13 ± 2.31
	Nurse-in-charge	283 (37.7)	2.00 ± 2.19
	Senior nurse	37 (4.9)	1.59 ± 1.86
Monthly income (CNY)	< 5000	101 (13.5)	2.23 ± 2.32	1.234	0.292
	5000-10000	562 (74.9)	2.01 ± 2.22
	> 10000	87 (11.6)	1.72 ± 1.90
Number of night shifts (per month)	0	80 (10.7)	1.44 ± 1.98	6.619	< 0.001
	1-5	201 (26.8)	1.99 ± 2.09
	6-10	409 (54.5)	1.98 ± 2.14
	> 10	60 (8.0)	3.07 ± 2.85
Daily working hours (hours)	≤ 8	145 (19.3)	1.57 ± 2.00	-2.719	0.007
	> 8	605 (80.7)	2.12 ± 2.23
Number of children	0	306 (40.8)	2.21 ± 2.23	3.669	0.026
	1	257 (34.3)	1.72 ± 2.13
	2	187 (24.9)	2.09 ± 2.20
	≥ 3	0 (0)	0.00 ± 0.00
Commuting time to work (minutes)	< 15	133 (17.7)	1.88 ± 2.15	0.490	0.689
	15-30	336 (44.8)	2.11 ± 2.21
	31-60	207 (27.6)	1.99 ± 2.29
	> 60	74 (9.9)	1.86 ± 1.96
Department	Internal Medicine	166 (22.1)	2.04 ± 2.28	0.759	0.552
	Surgery	169 (22.5)	2.17 ± 2.31
	Pediatrics	131 (17.5)	1.78 ± 2.10
	Gynecology	137 (18.3)	1.89 ± 2.07
	Other departments (emergency, ICU, etc.)	147 (19.6)	2.11 ± 2.19
Province	Jiangxi	140 (18.7)	1.92 ± 2.01	5.861	< 0.001
	Sichuan	119 (15.9)	2.29 ± 2.14
	Shaanxi	120 (16.0)	2.54 ± 2.68
	Zhejiang	120 (16.0)	2.38 ± 2.28
	Shanxi	120 (16.0)	1.68 ± 2.00
	Guangdong	131 (17.5)	1.32 ± 1.82

CNY: China yuan; ICU: Intensive care unit.

Table 2 Work-family behavioral role conflict, daytime sleepiness, and suicide risk scores (n = 750), M (P₂₅, P₇₅)

Item	Score	Average score of items
Work-family behavioral role conflict	59.00 (49.75, 67.00)	3.11 (2.62, 3.53)
The impact of work on family	25.00 (22.00, 28.00)	3.57 (3.14, 4.00)
The impact of family on work	34.00 (26.00, 40.00)	2.83 (2.17, 3.33)
Daytime sleepiness	21.00 (17.00, 24.00)	3.00 (2.43, 3.43)
Suicide risk	2.00 (0.00, 3.00)	0.67 (0.00, 1.00)

Table 3 Analysis of work-family behavioral role conflict and daytime sleepiness in correlation with suicide risk

Item	Work-family behavioral role conflict	The impact of work on family	The impact of family on work	Daytime sleepiness	Suicide risk
Work-family behavioral role conflict	1
The impact of work on family	0.816a	1
The impact of family on work	0.953a	0.603a	1
Daytime sleepiness	0.817a	0.653a	0.785a	1
Suicide risk	0.734a	0.536a	0.733a	0.717a	1

^aP < 0.01.

Table 4 PROCESS distributed regression method mediation effect test results

Independent variable	Dependent variable	t	β	SE	P value
Work-family behavioral role conflict	Suicide risk	29.561	0.118	0.004	< 0.001
Work-family behavioral role conflict	Daytime sleepiness	38.686	0.304	0.008	< 0.001
Work-family behavioral role conflict	Suicide risk	10.878	0.072	0.007	< 0.001
Daytime sleepiness		8.564	0.152	0.018	< 0.001

Table 5 Mediating role of daytime sleepiness between work-family behavioral role conflict and suicide risk

Path	Effect relationship	Effect value	95%CI		P value	Effect proportion (%)
			Lower limit	Upper limit
Work-family behavioral role conflict → suicide risk	Total effect	0.118	0.110	0.126	< 0.001
Work-family behavioral role conflict → suicide risk	Indirect effects	0.046	0.033	0.060	< 0.001	38.98
Work-family behavioral role conflict → suicide risk	Direct effects	0.072	0.059	0.085	< 0.001	61.01