Table 3.
Participant Characteristics
| Total (N=450) |
UK (n=150) |
USA (n=150) |
Germany (n=150) |
|
|---|---|---|---|---|
| Age, Years | ||||
| Median (IQR) | 64.0 (58.0–71.0) | 67.0 (59.0–71.0) | 66.0 (59.0–73.0) | 60.0 (55.0–65.0) |
| Sex, n (%) | ||||
| Male | 254 (56.4) | 88 (58.7) | 76 (50.7) | 90 (60.0) |
| Female | 196 (43.6) | 62 (41.3) | 74 (49.3) | 60 (40.0) |
| Smoking Status, n (%) | ||||
| Former | 260 (57.8) | 78 (52.0) | 106 (70.7) | 76 (50.7) |
| Current | 179 (39.8) | 69 (46.0) | 39 (26.0) | 71 (47.3) |
| Never | 11 (2.4) | 3 (2.0) | 5 (3.3) | 3 (2.0) |
| Time Since Diagnosis, Years | ||||
| Median (IQR) | 6.00 (3.0–10.0) | 5.00 (3.0–10.0) | 7.00 (4.0–11.0) | 5.00 (3.0–10.0) |
| mMRC Dyspnea Scale Score,a n (%) | ||||
| 0 | 28 (6.2) | 9 (6.0) | 15 (10.0) | 4 (2.7) |
| 1 | 177 (39.3) | 56 (37.3) | 65 (43.3) | 56 (37.3) |
| 2 | 156 (34.7) | 54 (36.0) | 48 (32.0) | 54 (36.0) |
| 3 | 71 (15.8) | 23 (15.3) | 18 (12.0) | 30 (20.0) |
| 4 | 18 (4.0) | 8 (5.3) | 4 (2.7) | 6 (4.0) |
| CAT Score | ||||
| Mean (SD) | 22.9 (7.2) | 23.3 (7.8) | 21.1 (6.9) | 24.2 (6.8) |
| Exacerbations in the Past Year, n (%) | ||||
| 0 | 157 (34.9) | 53 (35.3) | 54 (36.0) | 50 (33.3) |
| 1 | 107 (23.8) | 32 (21.3) | 34 (22.7) | 41 (27.3) |
| 2 | 105 (23.3) | 38 (25.3) | 31 (20.7) | 36 (24.0) |
| ≥3 | 81 (18.0) | 27 (18.0) | 31 (20.7) | 23 (15.3) |
Notes: aThe mMRC Dyspnea Scale is 0: no breathlessness except on strenuous exercise; 1: short of breath when hurrying on level ground or walking up a slight hill; 2: slower than people of the same age because of breathlessness, or need to stop for breath when walking at own pace; 3: stop for breath after walking about 100 yards or after a few minutes on level ground; 4: too breathless to leave the house or breathless when dressing.
Abbreviations: CAT, COPD Assessment Test; IQR, interquartile range; mMRC, modified Medical Research Council; SD, standard deviation; UK, United Kingdom; USA, United States of America.