BTS treatment step for all asthma patients (n=599) and active asthma patients (n=441) immediately prior to the new oral β-blocker prescription
| BTS step | All asthma patients with β-blockers | Active asthma patients with β-blockers | ||
| Cardioselective (%) | Non-selective (%) | Cardioselective (%) | Non-selective (%) | |
| 1 | 150 (57.7) | 233 (68.7) | 89 (44.7) | 135 (55.8) |
| 2 | 69 (26.5) | 61 (18.0) | 69 (34.7) | 61 (25.2) |
| 3 | 23 (8.8) | 27 (8.0) | 23 (11.6) | 27 (11.2) |
| 4 | 17 (6.5) | 18 (5.3) | 17 (8.5) | 18 (7.4) |
| Other | 1 (0.4) | 1 (0.3) | 1 (0.5) | 1 (0.4) |
| Total | 260 (100.0) | 339 (100.0) | 199 (100.0) | 242 (100.0) |
Other, patients with either long-acting β2-agonist or theophylline monotherapy.
BTS, British Thoracic Society/Scottish Intercollegiate Guideline Network.