Table 1.

Comparison of baseline characteristics between the comorbidity group and COPD group

Variable	Comorbidity Group (n=133)	COPD Group (n=91)	Z/t/χ2 Value	P-Value
Age	66.00 (63.00, 71.00)	64.00 (62.50, 66.00)	3.505	<0.001
≥65 years	89	41	9.259	0.002
<65 years	47	50
Gender			6.351	0.012
Male	122	73
Female	11	18
BMI (kg/m2)	22.91 (3.20)	22.90 (3.35)	0.014	0.989
<18.5	11	10	0.569	0.752
18.5-24	75	48
>24	47	33
COPD Duration (years)	11.00 (7.00, 16.00)	8.00 (5.00, 12.00)	3.197	0.001
<10	55	56	11.038	0.004
45585	65	33
>20	13	2
Residence			0.316	0.574
Urban	65	41
Rural	68	50
Smoking History			7.63	0.006
Present	108	59
Absent	25	32
Drinking History			1.436	0.231
Present	29	14
Absent	104	77
Diabetes History			0.031	0.861
Present	8	6
Absent	125	85
Acute Exacerbation in Past Year			1.632	0.201
Present	90	54
Absent	43	37
Corticosteroid Treatment			6.065	0.014
Present	20	26
Absent	113	65
GOLD Staging			24.804	<0.001
I	18	2
II	79	37
III	34	46
IV	2	6

Note: BMI: Body Mass Index, COPD: Chronic Obstructive Pulmonary Disease, GOLD: Global Initiative for Chronic Obstructive Lung Disease.