Patient characteristics
| Breezhaler® | Diskus® | Handihaler® | pMDI | Respimat® | Turbuhaler® | Total# | |
| Number of patients n | 876 | 452 | 598 | 422 | 625 | 420 | 2935 |
| Male/female % | 66.2/33.8 | 60.0/40.0 | 68.9/31.1 | 57.8/42.2 | 63.0/37.0 | 61.1/38.8 | 63.2/36.8 |
| Age years | |||||||
| Mean±sd | 65.9±11.1 | 65.4±11.5 | 66.5±10.8 | 64.5±11.9 | 65.9±11.5 | 65.5±11.9 | 65.4±11.4 |
| (min–max) | (41–97) | (41–96) | (41–92) | (41–99) | (41–98) | (41–94) | (41–99) |
| Tobacco | |||||||
| Current/ex-smoker % | 39.6/60.3 | 37.8/62.2 | 38.5/61.5 | 36.5/63.5 | 37.8/62.2 | 41.4/58.6 | 39.1/60.8 |
| Pack-year mean±sd | 34±17 | 31±15 | 33±15 | 31±17 | 32±15 | 31±16 | 32±16 |
| Positive asthma history % | 20.8 | 33.0 | 23.1 | 37.2 | 21.8 | 29.5 | 26.4 |
| Previous spirometry n (%) | 546 (62.3) | 281 (62.2) | 397 (66.4) | 253 (60.0) | 372 (59.5) | 251 (59.8) | 1733 (59.0) |
| FEV1 % | |||||||
| ≥80% | 19.4 | 14.9 | 17.9 | 17.4 | 20.2 | 17.1 | 19.0 |
| 50 to <80% | 56.0 | 61.6 | 50.9 | 53.8 | 59.9 | 57.8 | 57.7 |
| 30 to <50% | 19.4 | 16.0 | 24.2 | 19.8 | 15.9 | 19.5 | 17.9 |
| <30% | 3.1 | 5.7 | 4.3 | 4.7 | 2.4 | 3.6 | 2.9 |
| ND | 2.0 | 1.8 | 2.8 | 4.3 | 1.6 | 2.0 | 2.5 |
| Education % | |||||||
| Demonstration of use | 88.5 | 84.1 | 84.6 | 82.2 | 88.3 | 84.0 | 85.9 |
| Leaflet read at least once | 59.0 | 58.8 | 58.9 | 56.6 | 63.7 | 60.0 | 59.7 |
| Poor adherence previous week % | 10.4 | 4.0 | 11.9 | 3.8 | 10.9 | 4.3 | 8.3 |
pMDI: pressurised metered-dose inhaler; FEV1: forced expiratory volume in 1 s; ND: no data. #: patients can use more than one device, so the total is not the sum of individual values.