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Six-point scale of severe and critically severe patients.
| Description | Points |
|---|---|
| Death | 6 |
| Hospitalization and receiving extracorporeal membrane oxygenation (ECMO) and/or mechanical ventilation | 5 |
| Hospitalization and receiving noninvasive ventilation and/or high-flow oxygen therapy | 4 |
| Hospitalization and requiring oxygen treatment (but not high-flow oxygen therapy or noninvasive ventilation) | 3 |
| Hospitalization but not requiring oxygen treatment | 2 |
| Recovery | 1 |
