Air Pollution by Hydrothermal Volcanism and Human Pulmonary Function

Table 3

Adjusted association between characteristics of study participants, exposure to volcanogenic soil diffuse degassing, and obstructive lung defects.

Binomial logistic regression			Number of obs. 505; LR chi2(5) = 60.80; Prob > chi2 = <0.001
Parameter	(%)	OR (95% CI)^a	P value
Age		1.04 (1.02–1.06)	<0.001
Easy fatigue
Yes	116 (23)	1.80 (1.05–3.28)	0.033
No	389 (77)	1.00
Gender
Male	207 (41)	0.66 (0.39–1.11)	0.123
Female	298 (59)	1.00
Smoking status
Smoker	163 (32.3)	2.34 (1.35–4.06)	0.002
Nonsmoker	342 (67.7)	1.00
Exposure to DDS
Yes (study group)	146 (28.9)	2.83 (1.60–4.99)	<0.001
No (reference group)	359 (71.1)	1.00

 ^aOR, odds ratio; 95% CI, 95% confidence interval.