Table 2.
Average diagnostic efficacy across facilities.
| Performance Metrics | Value | 95% Confidence Interval |
|---|---|---|
| Sensitivity | 77.1 | 68.0–84.6 |
| Specificity | 99.5 | 99.3–99.7 |
| Positive Likelihood ratio | 254.4 | 107.7–221.4 |
| Negative Likelihood ratio | 0.23 | 0.16–0.33 |
| Abnormality prevalence | 1.67 * | 1.37–2.01 |
| Positive predictive value | 72.41 | 64.7–79.0 |
| Negative predictive value | 99.6 | 99.5–99.7 |
| Area Under Curve | 88.3 | 83.7–92.2 |
| Youden index | 77.1 |
* = The prevalence of anomalies is not representative of the true population prevalence. Therefore, these values should not be inferred to the population.