Table 2.
Quick COVID-19 Severity Index and COVID-19 Severity Index model variables.
| qCSI variable | Points | Additional CSI variables |
|---|---|---|
| Respiratory rate, breaths/min | Aspartate transaminase | |
| ≤22 | 0 | Alanine transaminase |
| 23–28 | 1 | Ferritin |
| >28 | 2 | Procalcitonin |
| Pulse oximetry, %∗ | Chloride | |
| >92 | 0 | C-reactive protein |
| 89–92 | 2 | Glucose |
| Oxygen flow rate, L/min | ||
| ≤88 | 5 | Urea nitrogen WBC count |
| ≤2 | 0 | Age |
| 3–4 | 4 | |
| 5–6 | 5 |
qCSI, Quick COVID-19 Severity Index; CSI, COVID-19 Severity Index.
∗
Pulse oximetry represents the lowest value recorded during the first 4 hours of the patient encounter.