Healthc Inform Res.  2016 Apr;22(2):89-94. 10.4258/hir.2016.22.2.89.

Nomogram of Naive Bayesian Model for Recurrence Prediction of Breast Cancer

Affiliations
  • 1Department of Public Health and Medical Administration, Dongyang University, Yeongju, Korea.
  • 2Department of Biomedical Informatics, Ajou University School of Medicine, Suwon, Korea. veritas@ajou.ac.kr
  • 3Breast Cancer Center, Ulsan City Hospital, Ulsan, Korea.

Abstract


OBJECTIVES
Breast cancer has a high rate of recurrence, resulting in the need for aggressive treatment and close follow-up. However, previously established classification guidelines, based on expert panels or regression models, are controversial. Prediction models based on machine learning show excellent performance, but they are not widely used because they cannot explain their decisions and cannot be presented on paper in the way that knowledge is customarily represented in the clinical world. The principal objective of this study was to develop a nomogram based on a naïve Bayesian model for the prediction of breast cancer recurrence within 5 years after breast cancer surgery.
METHODS
The nomogram can provide a visual explanation of the predicted probabilities on a sheet of paper. We used a data set from a Korean tertiary teaching hospital of 679 patients who had undergone breast cancer surgery between 1994 and 2002. Seven prognostic factors were selected as independent variables for the model.
RESULTS
The accuracy was 80%, and the area under the receiver operating characteristics curve (AUC) of the model was 0.81.
CONCLUSIONS
The nomogram can be easily used in daily practice to aid physicians and patients in making appropriate treatment decisions after breast cancer surgery.

Keyword

Breast Neoplasms; Decision Support Techniques; Data Mining; Neural Networks; Survival Analysis; Support Vector Machine

MeSH Terms

Breast Neoplasms*
Breast*
Classification
Data Mining
Dataset
Decision Support Techniques
Follow-Up Studies
Hospitals, Teaching
Humans
Machine Learning
Nomograms*
Recurrence*
ROC Curve
Support Vector Machine
Survival Analysis

Figure

  • Figure 1 Process of selecting prognostic factors in the model using both previously established clinical knowledge and statistical analysis.

  • Figure 2 Proposed nomogram for the prediction of breast cancer recurrence within 5 years after breast cancer surgery. By using a measure, each score of the variables can be transferred into the total score, which is linked to the responding probability.

  • Figure 3 Receiver operating characteristics (ROC) curve and calibration plot for the naïve Bayesian classifier at 5 years after breast cancer surgery. (A) The area under the ROC curve (AUC) was 0.81 for naïve Bayesian classifier. (B) The x-axis represents the predicted probability of recurrence; the y-axis represents observed probability. TP: true positive, FP: false positive.


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