Selecting the Best Cut-off Point of Serum HE-4 in Ovarian Cancer by ROC Curve
10.3969/j.issn.1671-7414.2015.04.043
- VernacularTitle:利用 ROC 曲线选择血清 HE-4对卵巢癌的最佳诊断界点
- Author:
Yifeng GU
;
Zili ZHU
;
Jinye ZHANG
;
Xiaoxia ZHANG
;
Yueyan SHI
- Publication Type:Journal Article
- Keywords:
ovarian cancer;
HE-4;
ROC curve;
cut-off point
- From:
Journal of Modern Laboratory Medicine
2015;(4):141-143
- CountryChina
- Language:Chinese
-
Abstract:
Objective Using ROC curve to determine the best cut-off point of serum HE-4 in the diagnosis of ovarian cancer and provide important value to diagnosis early ovarian cancer.Methods The levels of serum HE-4 in 68 ovarian cancer pa-tients,42 ovarian benign tumor patients and 30 healthy female were detected by electrochemistry irradiance method.The ROC curve was drawn and the cut-off point of HE-4 was determined by statistical software.Results The levels of serum HE-4 were all non-normal distribution in the groups of ovarian cancer,ovarian benign tumor and healthy controls.Whats more,there was no significant difference between ovarian benign tumor group and normal control group.And compared with benign ovarian tumors and normal control group,the level of HE-4 in ovarian cancers was significantly increased (P <0.01).It would be best for diagnosis when the level of serum HE-4 was 108pmol/L in ovarian cancer.Youden’s index showed the maximum (0.713)and the sensitivity and specificity of diagnosing were 77.9% and 93.1% respectively.The positive predictive value was 91.4% and negative predictive value was 91.4%.At the same time,the positive likelihood ratio was 11.6 and the negative likelihood ratio was 0.2,odds ratio reached to 47.3.Conclusion The detection of HE-4 is an ideal mark for diagnosing and excluding ovarian cancer.Selecting 108 pmol/L as ovarian cancer diagnosis point is relative appro-priate.
