Table 4. ROC curves comparison analyses of predictive index score and independent predictors (n = 234).
| ROC curves (predictive index score vs.) | ΔAUC | SE | 95% CI | Z statistic | P value |
|---|---|---|---|---|---|
| CA19-9 | 0.194 | 0.050 | 0.096-0.292 | 3.870 | < 0.001 |
| CEA | 0.136 | 0.041 | 0.056-0.216 | 3.322 | < 0.001 |
| LMR | 0.191 | 0.044 | 0.057-0.277 | 4.333 | < 0.001 |
| PLR | 0.167 | 0.040 | 0.089-0.335 | 5.035 | < 0.001 |
| MPD ≥ 10 mm | 0.263 | 0.035 | 0.195-0.332 | 7.517 | < 0.001 |
| Tumor size | 0.241 | 0.048 | 0.090-0.245 | 4.201 | < 0.001 |
ROC, receiver operating characteristic; AUC, area under the curve; SE, standard error; CI, confidence interval; MPD, main pancreatic duct; CA19-9, carbohydrate antigen 19-9; CEA, carcinoembryonic antigen; PLR, platelet-to-lymphocyte ratio; LMR, lymphocyte-to-monocyte ratio.