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Contingency table for high-risk and low-risk groups as defined by IL-6 and CRP level in the validation cohort
| Variable | Value | Mechanical ventilation |
P value | |
|---|---|---|---|---|
| No | Yes | |||
| IL-6 level at presentation (pg/mL) | ≤35 | 19 | 3 | .0030 |
| >35 | 11 | 16 | ||
| Maximal IL-6 level (pg/mL) | ≤80 | 25 | 5 | .00022 |
| >80 | 5 | 14 | ||
| CRP level at presentation (mg/L) | ≤32.5 | 19 | 1 | .00019 |
| >32.5 | 11 | 18 | ||
| Maximal CRP level (mg/L) | ≤97 | 23 | 3 | .00011 |
| >97 | 7 | 16 | ||
