Factors Influencing Job Burnout and Musculoskeletal Disorders among Coal Miners in the Xinjiang Uygur Autonomous Region

Table 6

: Multivariate logistic regression analysis of WMSDs in coal miners.

Variable	Group	Beta	Standard error	Wald		OR (95% CI)
Length of service (years)	1∼10	—	—	12.127	0.002	—
	11∼20	0.471	0.135	12.069	0.001	1.601 (1.228–2.088)
	≥21	0.204	0.161	1.614	0.204	1.226 (0.895–1.680)
Type of work	Coal miners	—	—	11.032	0.026	—
	Excavate miners	−0.255	0.183	1.929	0.165	0.775 (0.541–1.110)
	Transport miners	0.293	0.165	3.171	0.075	1.340 (0.971–1.850)
	Special miners	−0.373	0.329	1.284	0.257	0.689 (0.362–1.313)
	Assist miners	0.018	0.165	0.012	0.914	1.018 (0.737–1.406)
Annual income (yuan)	15000∼70000	—	—	6.642	0.036	—
	70000∼100000	0.442	0.174	6.434	0.011	1.556 (1.106–2.190)
	100000 more than	0.261	0.415	0.396	0.529	1.298 (0.576–2.929)
Burnout level	Zero burnout	—	—	14.049	0.003	—
	Mild burnout	0.822	0.350	5.503	0.019	2.275 (1.145–4.519)
	Moderate burnout	0.905	0.309	8.566	0.003	2.472 (1.348–4.531)
	Severe burnout	1.101	0.308	12.798	<0.001	3.008 (1.645–5.500)

Bold P values < 0.05 are statistically significant.