Lu Shuai,Li Wenjie,Xu Ziwei,et al.Construction and validation of a prostatic cancer risk prediction model[J].Journal of Chongqing Medical University,2023,48(3):328-334.
Lu Shuai,Li Wenjie,Xu Ziwei,et al.Construction and validation of a prostatic cancer risk prediction model[J].Journal of Chongqing Medical University,2023,48(3):328-334. DOI: 10.13406/j.cnki.cyxb.003180.
Construction and validation of a prostatic cancer risk prediction model
0.05),是PCa发病的独立影响因素;利用其构建的PCa风险预测模型内部评价和内部验证的校准曲线准确度较高;模型内部评价的曲线下面积(area under curve,AUC)为0.766(95%CI=0.728~0.804),患者的决策曲线分析(decision curve analysis,DCA)净获益率为9%~72%;而模型内部验证的AUC为0.704(95%CI=0.639~0.768),患者的DCA净获益率为18%~59%及63%~64%。
To screen the influencing factors of the incidence of prostatic cancer(PCa),build a risk prediction model for PCa and validate it.
Methods
2
Based on the
Prostatic Cancer Early Warning Data Set
of National Clinical Medical Science Data Center,and after the data processing, the data were randomly divided into a modeling group and a verification group according to 7∶3. Least absolute shrink⁃age and selection operator(LASSO) regression was used to screen the PCa characteristic indicators of the modeling group, multifactor logistic regression analysis was carried out to analyze the characteristic indicators,and the analysis results were used to build a PCa risk prediction model for the data of the modeling group. At the same time,the data of the modeling group were used for internal evaluation and the data of the validation group for internal verification.
Results
2
A total of 880 sample data were included,including 616 in the modeling group and 264 in the validation group. The 14 characteristic indexes screened by LASSO regression analysis were used for multivariate logistic regression analysis. The results showed that only globulin(
OR=
1.112,95%CI=1.044-1.185),inorganic phosphorus(
OR=
65.167,95%CI=20.437-207.796),total prostate specific antigen(tPSA)(
OR=
1.026,95%CI=1.014-1.037) and serum uric acid(
OR=
0.997,95%CI=0.994-0.999) had significant differences(
P
<
0.05),and they were independent influencing factors for PCa. The calibration curve of the internal evaluation and internal verification of the PCa risk prediction model had high accuracy. The area under curve(AUC) of internal evaluation of the model was 0.766(95%CI=0.728-0.804),and the net benefit rate of decision curve analysis(DCA) of patients was 9%-72%;the AUC of internal validation of the model was 0.704(95%CI=0.639-0.768),and the net benefit rate of DCA of patients was 18%-59% and 63%-64%.
Conclusion
2
Globulin,inorganic phosphorus,tPSA and serum uric acid are independent influencing factors of PCa. The risk prediction model constructed by them has a good prediction effect.
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