Diagnostic Performance of the Stepped Approach
| Performance Measure | Values |
|---|---|
| Sensitivity | 68/73 (93) [85–97] |
| Specificity | 277/525 (53) [48–57] |
| Efficiency | 282/598 (47) [43–51] |
| Failure rate | 5/282 (1.8) [0.7–4.1] |
Note: Values are numerator/denominator (%) [95% CI].