Survival analysis is a statistical method used to study and analyze time to event data in various fields, such as in medicine, biology, epidemiology, economics, social sciences, and more. Its aim is to explore when events such as death, failure, recovery, etc., occur and how the probabilities of their occurrence change over time.
In this thesis, we will present the basic quantities in survival analysis, as well as their nonparametric estimation based on censored survival data. Moreover, different confidence intervals of them will also be discussed. Additionally, we will also learn how the estimators differ when truncated data is incorporated. After deriving the KaplanMeier estimator (the standard estimator of survival function), we show that it is a maximum likelihood estimator. Further, we derive the estimated variance of Kaplan-Meier estimator by using delta method. Finally we will put our theory into practice by conducting data analysis with the help of the programming language R.
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Survival analysis is a statistical method used to study and analyze time to event data in various fields, such as in medicine, biology, epidemiology, economics, social sciences, and more. Its aim is to explore when events such as death, failure, recovery, etc., occur and how the probabilities of their occurrence change over time.
In this thesis, we will present the basic quantities in survival analysis, as well as their nonparametric estimation based on censored survival data. Moreover, differ...
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