Table 7.

Multiple hierarchical linear regression models of variables (WPV, psychological stress, sleep quality and subjective health) (n=1024)

Variables	Psychological stress		Sleep quality				Subjective health
	M1	M2	M3	M4	M5	M6	M7	M8	M9	M10
Control variables
Age	0.013	−0.022	−0.028	−0.005	−0.021	−0.015	−0.067	−0.037	−0.058	−0.046
Gender	0.055	0.043	−0.005	0.004	0.022	0.023	−0.013	−0.002	0.12	0.016
Service years	0.034	0.009	−0.063	−0.046	−0.044	−0.041	−0.103	−0.081	−0.087	−0.078
Education	−0.003	0.003	−0.024	−0.027	−0.024	−0.025	−0.02	−0.025	−0.025	−0.024
Marital status	0.079	0.04	0.037	0.063	0.073	0.082	−0.01	0.023	0.024	0.04
Professional categories	0.069	0.58	−0.062	−0.055	−0.032	−0.028	−0.026	−0.016	0.002	0.008
Mediating variable
Psychological stress					−0.474**	−0.458**			−0.463**	−0.425**
Independent variable
WPV		0.295**		−0.198**		−0.063**		−0.252**		−0.127**
F	2.493*	15.578**	1.441	6.92**	42.645**	38.193**	1.922	11.142**	40.953**	38.19**
R2	0.015*	0.099**	0.009	0.047**	0.23**	0.229**	0.011	0.073**	0.223**	0.236**
ΔR2	0.015*	0.084**	0.009	0.038**	0.221**	0.003**	0.011	0.061**	0.211**	0.014**

*P<0.05; **p<0.01.

WPV, workplace violence.