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Diagnostic accuracy parameters of CXR (classic/probable COVID or indeterminate) vs PCR
| Statistic | Value | 95% CI |
|---|---|---|
| Sensitivity | 66% | 57–74% |
| Specificity | 70% | 63–76% |
| Positive Likelihood Ratio | 2.2 | 1.7–2.8 |
| Negative Likelihood Ratio | 0.49 | 0.38–0.63 |
| Disease prevalence | 40% | 35–45% |
| Positive Predictive Value | 59% | 51–67% |
| Negative Predictive Value | 76% | 69–81% |
