Mean (SD) athma autonomy preference index (API) scores3-150 (n=212)
| Asthma API | Cronbach alpha | |
| Stable follow up | 3.4 (0.8) | 0.77 |
| Moderate attack | 3.1 (0.9) | 0.81 |
| Severe attack | 3.9 (0.9) | 0.85 |
| General autonomy | 3.3 (0.8) | 0.82 |
| Total asthma API | 3.4 (0.8) | 0.87 |
↵3-150 Maximum 5 = “Doctor alone should make decisions”; minimum 1 = “Patient alone should make decisions”.