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Components for the R4 score. Each criterion met sums 1 point.
| R4 Score Components | |
|---|---|
| Age ≥ 63 years | |
| eGFR ≤ 60 ml/min | |
| ROX ≤ 5.2 at 24h of HFO | |
| History of Hypertension | |
| History of Diabetes | |
| Any of the following comorbidities: | CVD |
| Autoimmune disease | |
| COPD | |
| Cancer | |
| Hypothyroidism |
