Table 4.

Hierarchical multiple regression of emotional exhaustion (EE)

Variables	Model1	Model2	Model3	Model4	Moedel5
Demographics
Age(yr)	0.066	−0.084	− 0.053	− 0.053	−0.050
Gender	−0.135*	− 0.079	− 0.064	− 0.059	− 0.053
Marital Status	0.108	0.096	0.050	0.054	0.087
Work situations
Work experience before SRT		0.093	0.025	0.026	0.022
Years of SRT		0.146**	0.077	0.065	0.046
Night shift		0.142**	0.140**	0.140**	0.129**
Daily sleep hours		−0.140**	− 0.014	− 0.009	0.020
Satisfaction with annual income		−0.242**	−0.065	− 0.068	−0.058
Recognition on necessity of SRT		−0.143**	−0.026	− 0.018	−0.010
Occupational pressure			0.597**	0.583**	0.547**
Empathy				−0.055	−0.016
Social support					−0.185**
ΔR2	0.041	0.231	0.484	0.486	0.511
Adjusted R2	0.032	0.208	0.467	0.468	0.491
F	4.471**	10.254**	28.763**	26.313**	26.528**

* P < 0.05, **P < 0.01; Demographics and work situations were controlled in the mode. In step1, demographics were added. In step2, work situations were added. In step3, occupational pressure was added. In step4, empathy was added. In step5, social support was added