Table 2.
General and clinical characteristic in the COPD patients and control group
| |
COPD |
Control |
p value for |
|---|---|---|---|
| n = 51 | n = 51 | Mann–Whitney test | |
| Gender (male) |
30 |
28 |
>0.05 |
| Ethnicity (white) |
45 |
50 |
>0.05 |
| Age (years)a |
65.33 ± 8.91 |
63.61 ± 9.40 |
>0.05 |
| BMI (kg/m2)a |
25.75 ± 5.71 |
26.82 ± 3.89 |
>0.05 |
| FEV1 (% predicted) |
42.90±19.03 |
86.14±11.72 |
0.000 |
| FEV1/FVC (% predicted) |
67.92±19.58 |
105.24±70.28 |
0.000 |
| Smoking Status |
|
|
|
| Never/ Former/ Current |
5/ 34/ 12 |
22/ 25/ 4 |
χ2 0.000 |
| Cigarettes-yearb |
|
|
|
| Current smoking |
8059 (3650–14600) |
7026 (3650–10950) |
>0.05 |
| Former smoking |
10490 (1095–25550) |
5621 (1095–14600) |
0.003 |
| Smoking Duration |
|
|
|
| >30 years |
36 |
9 |
χ2 0.000 |
| COPD Statusc |
|
|
|
| Mild |
8 |
- |
- |
| Moderate |
16 |
- |
- |
| Severe |
16 |
- |
- |
| Very Severe | 11 | - | - |
n, sample number; aData are presented as mean ± SD; bMedian (minimum-maximum); cCOPD status by GOLD [11] ; BMI, body mass index; χ2, chi-square test.