Table 3.
Result of Diagnostic accuracy Tests.
| Total TP = 133 FP = 17 FN = 6 TN = 178 |
n | Sensitivity (95% CI) |
Specificity (95% CI) |
PPV | NPV | ROC Area |
|---|---|---|---|---|---|---|
| 334 | 95.7% (90.8–98.4) |
91.3% (86.4–94.8) |
88.7% | 96.7% | 0.935 | |
| Age group (15–29) TP = 68 FP = 8 FN = 2 TN = 70 |
148 | 97.1% (90.1–99.7) |
89.7% (80.8–95.5) |
89.5% | 97.2% | 0.934 |
| Age group (30–44) TP = 33 FP = 6 FN = 4 TN = 52 |
95 | 89.2% (74.6–97) |
89.7% (78.8–96.1) |
84.6% | 92.9% | 0.894 |
| Age group (45–59) TP = 17 FP = 2 FN = 0 TN = 39 |
58 | 100% (80.5–100) |
95.1% (83.5–99.4) |
89.5% | 100% | 0.976 |
PPV = positive predictive value, NPV = negative predictive value, and ROC = receiver operating characteristic curve.