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Non-parametric estimation in an illness-death model with component-wise censoring

Wednesday, July 21, 2021 3:00pm to 4:00pm

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Department of Epidemiology & Biostatistics, Bioinformatics Presents:

Speaker: Anne Eaton, PhD, Assistant Professor of Biostatistics, Univ. of Minnesota

In clinical trials in serious disease settings, event-free survival is often used as the primary endpoint. But non-fatal events are often only detected at clinic visits, while time of death is known exactly. The endpoint therefore exhibits component-wise censoring. The standard method used to estimate event-free survival fails to account for component-wise censoring. We apply a kernel smoothing method in a novel way to produce a non-parametric estimator for event-free survival that accounts for component-wise censoring. We propose estimators for the probability in state and restricted mean time in state for illness-death models under component-wise censoring and derive their large-sample properties. Finally, we perform a simulation study to compare our method to existing methods.

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