Table 2.
Item concepts mapped to E-RS: COPD and supplemental items in the qualitative study
| E-RS: COPD items | Item concept reported in literature | Item concept reported by clinicians (N = 2) | Item concept reported during patient interviews | ||
|---|---|---|---|---|---|
| Spontaneous | Probed | Total, n (%) (N = 25) |
|||
| Item 1: Chest congestiona | ✓ | ✓ | 4 | 14 | 18 (72) |
| Item 2: Cough | ✓ | ✓ | 8 | 12 | 20 (80) |
| Item 3: Mucus/phlegma | ✓ | ✓ | 4 | 14 | 18 (72) |
| Item 4: Difficulty bringing up mucus/phlegma | ✓ | ✓ | 4 | 14 | 18 (72) |
| Item 5: Chest discomfort | NR | NR | 0 | 5 | 5 (20) |
| Item 6: Chest tightness | ✓ | ✓ | 7 | 15 | 22 (88) |
| Item 7: Breathlessness | ✓ | ✓ | 13 | 9 | 22 (88) |
| Item 8: Description of breathlessness | ✓ | ✓ | 13 | 9 | 22 (88) |
| Item 9: Short of breath with personal care activitiesb | ✓ | ✓ | 1 | 13 | 14 (56) |
| Item 10: Short of breath with indoor activities | ✓ | ✓ | 17 | 8 | 25 (100) |
| Item 11: Short of breath with outdoor activitiesc | ✓ | ✓ | 6 | 19 | 25 (100) |
aPatients described various aspects of sputum/mucus production; bpatients described shortness of breath at rest or with minimal physical activity; cpatients described shortness of breath with exertion. ✓, reported; E-RS: COPD, Evaluating Respiratory Symptoms in Chronic Obstructive Pulmonary Disease; NR, not reported