Underground Coal Mining: Relationship between Coal Dust Levels and Pneumoconiosis, in Two Regions of Colombia, 2014

Table 5

Logistic regression of pneumoconiosis, company size, level of risk due to exposure to bituminous coal, length of work history, and department.

		Sig.	OR	95% CI (OR)
Department
Cundinamarca	−0.040	0.887	0.961	0.553–1.670
Boyacá			1.000
Company size		0.019
Large	0.111	0.748	1.118	0.567–2.203
Medium	0.833	0.007	2.301	1.260–4.201
Small			1.000
Coal dust level of risk		0.227
Severe	1.065	0.065	2.901	0.937–8.982
High	0.679	0.217	1.972	0.671–5.799
Medium	1.009	0.149	2.744	0.697–10.804
Low			1.000
Number of years at work
≥30 years	1.170	0.000	3.222	1.806–5.748
25–29.9	1.306	0.000	3.691	1.892–7.201
<25 years			1.000
Smoking for more than one year
Yes	0.392	0.092	1.479	0.938–2.334
No			1.000
Constant	−2.183	0.000	0.113