Participant characteristics for stages 1 and 2
| Focus groups (n=36)* | Cognitive debriefing (n=9) | |
|---|---|---|
| Male n (%) | 18 (50.0) | 4 (44.4) |
| Age mean (SD) | 68.3 (5.2) | 66.3 (6.1) |
| BMI mean (SD) | 27.2 (4.8) | 28.5 (7.7) |
| Current smokers n (%) | 11 (30.6) | 4 (44.4) |
| COPD duration in years (SD) | 7.7 (4.5) | 11.2 (4.1) |
| FEV1% Predicted (%) (SD) | 52.1 (18.7) | 53.9 (14.1) |
| FEV/FVC (%) (SD) | 47.7 (12.3) | 46.9 (19.2) |
| GOLD Grade 1 n (%) | 2 (5.6) | – |
| FEV1% predicted (%) mean (SD) Min and Max | 92 (9.9) Min 85 Max 99 | |
| GOLD Grade 2 n (%) | 14 (38.9) | 7 (77.8) |
| FEV1% predicted (%) mean (SD) Min and Max | 61.5 (8.4) Min 50.2 Max 76.0 | 59.8 (9.0) Min 50.2 Max 74.9 |
| GOLD Grade 3 n (%) | 14 (38.9) | 2 (22.2) |
| FEV1% predicted (%) mean (SD) Min and Max | 39.8 (4.8) Min 31.5 Max 48.1 | 33.3 (2.5) Min 31.5 Max 35.1 |
| GOLD Grade 4 n (%) | 3 (8.3) | – |
| FEV1% predicted (%) mean (SD) Min and Max | 25.6 (0.7) Min 25.2 Max 26.5 |
*GOLD grades were available for 33/36 patients. Three patients were diagnosed by a physician with COPD but spirometry data on these patients was not available at the time of the focus groups.
BMI, Body Mass Index; GOLD, Global Initiative for Chronic Obstructive Lung Disease.