Table 1.
Patient characteristics.
| Variable | Validity study | Usability study | |
|
|
COPD-patients (n=9) | COPD-patients (n=16) | |
|
|
mean (SD) | mean (SD) | |
| Age in years | 66.2 (4.4) | 63.9 (10.0) | |
| Gender |
|
|
|
|
|
Male | 5 | 6 |
|
|
Female | 4 | 10 |
| BMI kg/m2 | 28.2 (5.4) | 25.1 (5.7) | |
| FEV1(L) | 1.46 (0.74) | 1.61 (0.63) | |
| FEV1(%predicted) | 51.1 (20.5) | 57.4 (17.8) | |
| FEV1/VC | 0.39 (0.13) | 0.46 (0.12) | |
| MRC dyspnea (1-5) | 3.0 (1.1) | 2.3 (1.1) | |
| GOLD stage |
|
|
|
|
|
I | 1 | 2 |
|
|
II | 4 | 9 |
|
|
III | 3 | 4 |
|
|
IV | 1 | 1 |
| GOLD patient group |
|
|
|
|
|
A | 1 | 3 |
|
|
B | 1 | 6 |
|
|
C | 0 | 1 |
|
|
D | 7 | 6 |
| Smoking |
|
|
|
|
|
Smokers | 2 | 5 |
|
|
Nonsmokers | 7 | 11 |
|
|
Pack-years (packs per day × years as a smoker) | 38.9 (15.6) | 35.5 (11.8) |