Table 1.

Patients included in this study.

	N	%
COPD subjects in the study	2432
Males	1648	67.76
Females	784	32.24
Tobacco smokers	1351	55.55
Subjects with biomass exposure	653	26.85
Patients with “0” comorbidity—”COPD+0”	912	37.5
Patients with “1” comorbidity—”COPD+1”	852	35.03
Patients with “2” comorbidities—”COPD+2”	461	18.95
Patients with “3” comorbidities—”COPD+3”	207	8.5
Subjects with DM	631	25.94
Subjects with HTN	906	37.25
Subjects with CVD	339	13.93