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Can J Stat. 2010 Sep;38(3):333-351.

Additive hazards regression with censoring indicators missing at random.

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Department of Statistics, Shatin, N. T., Hong Kong, P. R. China.


In this article, the authors consider a semiparametric additive hazards regression model for right-censored data that allows some censoring indicators to be missing at random. They develop a class of estimating equations and use an inverse probability weighted approach to estimate the regression parameters. Nonparametric smoothing techniques are employed to estimate the probability of non-missingness and the conditional probability of an uncensored observation. The asymptotic properties of the resulting estimators are derived. Simulation studies show that the proposed estimators perform well. They motivate and illustrate their methods with data from a brain cancer clinical trial.

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