Table 3.
Variables | TP | FP | TN | FN | Sensitivity [%(95% CI)] | Specificity [%(95% CI)] | PPV (%) | NPV (%) | Diagnostic accuracy (%) |
---|---|---|---|---|---|---|---|---|---|
PIVKA-II | 56 | 14 | 35 | 3 | 80.0 (0.68–0.88) | 92.1 (0.77–0.97) | 94.9 | 71.4 | 84.2 |
AFP | 51 | 19 | 25 | 13 | 72.8 (0.60–0.82) | 65.8 (0.48–0.79) | 79.7 | 56.8 | 70.4 |
AFP/PIVKA-II | 64 | 6 | 24 | 14 | 91.4 (0.81–0.96) | 63.1 (0.45–0.77) | 82.0 | 63.1 | 81.1 |
PIVKA-II + AFP | 47 | 23 | 36 | 2 | 67.1 (0.54–0.77) | 94.7 (0.80–0.99) | 95.9 | 61.0 | 76.8 |
TP true positive, FP false positive, TN true negative, FN false negative, PPV positive predictive value, NPV negative predictive value