|
Sex: male
|
240
| |
|
Age: mean years (SD)
|
70.4
|
7.9
|
|
Lung function: mean (SD)
| | |
|
FEV1 (% predicted)a
|
56.0
|
21.7
|
|
FEV1/FVCb ratio (%)
|
56.3
|
12.5
|
|
Education: counts (%)
| | |
|
Elementary school and below
|
158
|
66.11
|
|
Junior and senior high school
|
65
|
27.20
|
|
Junior college and above
|
16
|
6.69
|
|
Marital status: counts (%)
| | |
|
Married & lives together
|
207
|
86.97
|
|
Other (unmarried, divorce, widower or widow)
|
31
|
13.03
|
|
Current smoking status: yes counts (%)
|
66
|
28.21
|
|
Disease severity: counts (%)
| | |
|
Stage 0 & I: at risk or mild
|
39
|
16.25
|
|
Stage II: moderate
|
86
|
35.83
|
|
Stage III: severe
|
95
|
39.58
|
|
Stage IV: very severe
|
20
|
8.33
|
