Table 3. Sensitivity and specificity of the predictive model and tumor markers.
| Stage 0/I/II | Stage 0 | Stage I | Stage II | ||
|---|---|---|---|---|---|
| Sensitivity | Model | 99.3% | 100% | 97.5% | 100% |
| CEA | 18.1% | 3.8% | 15.0% | 29.3% | |
| CA19-9 | 9.3% | 6.4% | 6.3% | 13.1% | |
| Specificity | Model | 93.8% | 100% | 91.3% | 91.7% |
| CEA | 96.0% | 92.4% | 97.4% | 97% | |
| CA19-9 | 95.6% | 95.5% | 97.4% | 94.4% |
The sensitivity and specificity values of the predictive model obtained via multiple logistic regression analysis, and CEA and CA19-9, which were selected via simple linear regression analysis, are shown. Sensitivity and specificity were separately evaluated for stage 0-II (0/I/II), stage 0, stage I, and stage II disease. CEA: carcinoembryonic antigen; CA19-9: carbohydrate antigen 19-9.