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2 Right Censoring and Kaplan-Meier Estimator - NCSU Statistics

2 Right Censoring and Kaplan-Meier Estimator - NCSU Statistics

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CHAPTER 2 ST 745, Daowen Zhang<br />

�Λ(t) is asymptotically normal with mean Λ(t) <strong>and</strong> variance Var[ � Λ(t)], which can be estimated<br />

unbiasedly by<br />

<strong>and</strong> in the case of no ties, by<br />

�Var( � Λ(t)) = �<br />

⎡<br />

⎣<br />

x

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