DECAF score
| Variables | Score |
| Dyspnoea | 1 |
| eMRCD 5a (too breathless to leave the house unassisted but independent in washing and/or dressing) | 1 |
| eMRCD 5b (too breathless to leave the house unassisted and requires help with washing and dressing) | 2 |
| Eosinopenia (eosinophils <0.05×109/L) | 1 |
| Consolidation | 1 |
| Moderate or severe acidaemia (pH <7.3) | 1 |
| Atrial fibrillation (including history of paroxysmal atrial fibrillation) | 1 |
| Maximum DECAF score | 6 |
DECAF, Dyspnea, Eosinopenia, Consolidation, Acidemia and Atrial Fibrillation; eMRCD, extended Medical Research Council Dyspnea score.