30-day hospitalisation or death for different risk classes in the derivation cohort for the total population and for the different diagnoses
| Risk class | Total derivation cohort | Acute bronchitis | Exacerbation of COPD | Pneumonia | ||||
| Subjects n | Hospitalisation or death % | Subjects n | Hospitalisation or death % | Subjects n | Hospitalisation or death % | Subjects n# | Hospitalisation or death % | |
| All | 3166 | 8.7 | 1120 | 3.7 | 1523 | 8.8 | 523 | 18.9 |
| Group 1 (score ≤2) | 1564 | 3.2 | 925 | 2.6 | 639 | 4.1 | ||
| Group 2 (score 3-6) | 1288 | 9.9 | 187 | 7.5 | 722 | 9.6 | 379 | 11.6 |
| Group 3 (score ≥7) | 314 | 30.9 | 8 | 37.5 | 162 | 24.1 | 144 | 38.2 |
COPD: chronic obstructive pulmonary disease. #: A diagnosis of pneumonia gives 4 points, therefore there is no low-risk class.