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Comparison of serum marker levels for diagnosing esophageal squamous cell carcinoma
| Variable | AUC | Standard error | Asymptotic significance | Asymptotic 95%CI |
| HE4 | 0.795 | 0.038 | 0.000 | 0.717-0.859 |
| CEA | 0.737 | 0.043 | 0.000 | 0.665-0.809 |
| AFP | 0.666 | 0.049 | 0.001 | 0.580-0.744 |
| CA19-9 | 0.697 | 0.047 | 0.000 | 0.612-0.773 |
AUC: Area under the curve; HE4: Human epididymis protein 4; CEA: Carcinoma embryonic antigen; AFP: Alpha fetal protein; CA19-9: Carbohydrate antigen 19-9.
