Table 2.

Correlates of chronic bronchitis on multiple logistic regression.

Correlates	Chronic bronchitis
	OR	95%CI	P value
Age (70 years and above)	5.97	2.46–14.57	<0.001
Cattle shed in house premises	2.30	1.19–4.46	0.013
Indoor storage of fertilizers	2.93	1.00–8.60	0.049
Smokeless tobacco consumption	2.49	1.25–4.99	0.010
History of allergy	3.50	1.47–8.33	0.005
Past history of pulmonary tuberculosis	9.08	2.47–34.03	0.001