A modified Cox partial likelihood uses weighted averages of observed covariates to incorporate right-censored covariate values, yielding higher efficiency than complete-case analysis in simulations and two oncology trials.
Journal of Clinical Oncology26(15), 2544–2549 (2008)
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Cox Model Predicting Covariate Subject to Right Censoring
A modified Cox partial likelihood uses weighted averages of observed covariates to incorporate right-censored covariate values, yielding higher efficiency than complete-case analysis in simulations and two oncology trials.