Table 3.
Diagnostic performance of the diagnostic score model with different cutoffs for metastases.
| Cutoff | AUC | Sensitivity(%) | Specificity(%) | PPV(%) | NPV(%) |
|---|---|---|---|---|---|
| ≥2 | 0.5(0.5–0.5) | 100(97.0–100) | 0(0.0–3.1) | 51.0(51.0–51.0) | |
| ≥3 | 0.504(0.496–0.513) | 100(97.0–100) | 0.85(0.02–4.6) | 51.2(50.8–51.7) | 100 |
| ≥4 | 0.538(0.514–0.562) | 100(97.0–100) | 7.63(3.5–14.0) | 53.0(51.7–54.3) | 100 |
| ≥5 | 0.602(0.565–0.638) | 100(97.0–100) | 20.34(13.5–28.7) | 56.7(54.4–58.9) | 100 |
| ≥6 | 0.644(0.603–0.685) | 100(97.0–100) | 28.81(20.8–37.9) | 59.4(56.6–62.2) | 100 |
| ≥7 | 0.746(0.701–0.791) | 100(97.0–100) | 49.15(39.8–58.5) | 67.2(63.2–71.0) | 100 |
| ≥8 | 0.789(0.742–0.836) | 95.93(90.8–98.7) | 61.86(52.5–70.6) | 72.4(67.5–76.8) | 93.6(85.9–97.2) |
| ≥9 | 0.824(0.777–0.872) | 90.24(83.6–94.9) | 74.58(65.7–82.1) | 78.7(73.0–83.5) | 88.0(80.9–92.7) |
| ≥10 | 0.835(0.788–0.882) | 79.67(71.5–86.4) | 87.29(79.9–92.7) | 86.7(80.2–91.4) | 80.5(74.3–85.5) |
| ≥11 | 0.803(0.755–0.851) | 69.11(60.1–77.1) | 91.53(85.0–95.9) | 89.5(82.3–94.0) | 74.0(68.5–78.8) |
| ≥12 | 0.707(0.661–0.753) | 43.90(35.0–53.1) | 97.46(92.7–99.5) | 94.7(85.3–98.2) | 62.5(58.7–66.1) |
| ≥13 | 0.541(0.516–0.565) | 8.13(4.0–14.4) | 100(96.9–100) | 100 | 51.1(49.8–52.4) |
| ≥14 | 0.5 (0.5–0.5) | 0(0.0–3.0) | 100(96.9–100) | 49.0(49.0–49.0) |
Numbers in the parentheses were 95% confidence interval; PPV, positive predictive value; NPV, negative predictive value.