The field of statistics known as "survival analysis" studies how long it will take for a certain event to occur based on historical data. Since a suitable data structure is available, it may be used to almost any issue area,not only biological ones. This method of risk classification has recently been proved to be effective in recent research. Many research has attempted to improve performance by combining survival analysis with machine learning algorithms, which is a well-established statistical approach.

Survival Analysis, Clustering, Machine Learning, Risk Stratification, Hazard Ratio, Survival Analysis.