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Overall performance characteristics of the FebriDx test
| FebriDx result | All patients with PCR | ||
| COVID-19 positive/PCR detected | COVID-19 negative/PCR not detected | Total | |
| Bacterial | 2 | 23 | 25 |
| Viral | 18 | 5 | 17 |
| Negative | 12 | 34 | 52 |
| N=32 | N=62 | N=94 | |
| Sensitivity | 56% (95% CI 40% to 100%) | ||
| Specificity | 92% (95% CI 84% to 100%) | ||
| Positive predictive value | 78% (95% CI 60% to 100%) | ||
| Negative predictive value | 80% (95% CI 71% to 100%) | ||
