Table 2.
ROC curve of the diagnostic power of serum SAA and IL-6 level for gastric cancer.
| Cutoff | AUC | YOUDEN | Sensitivity | Specificity | 95% CI | ||
|---|---|---|---|---|---|---|---|
| Lower | Upper | ||||||
| SAA | 20.90 | 0.796 | 0.516 | 0.705 | 0.811 | 0.721 | 0.871 |
| IL-6 | 11.91 | 0.871 | 0.584 | 0.746 | 0.838 | 0.809 | 0.934 |
| CEA | 15.66 | 0.886 | 0.707 | 0.869 | 0.838 | 0.812 | 0.96 |
| Combination | – | 0.948 | 0.802 | 0.910 | 0.892 | 0.908 | 0.989 |
AUC = area under the curve, CEA = Cancer embryonic antigen, CI = confidence interval, IL-6 = Interleukin-6, SAA = serum amyloid A, ROC = receiver operating characteristic.