Category | Description |
---|---|
1 | Not hospitalised with no limitation on activities |
2 | Not hospitalised with some limitation on activities |
3 | Hospitalised, not requiring supplemental oxygen |
4 | Hospitalised, requiring supplemental oxygen |
5 | Hospitalised, requiring non-invasive mechanical ventilation or high-flow nasal cannular (HFNC) therapy |
6 | Hospitalised, requiring mechanical ventilation ± additional organ support |
7 | Died |