出版社:Dep. of Statistical Sciences "Paolo Fortunati", Università di Bologna
摘要:We are interested in estimating the distribution of lifetimes, also called survival times, subject to a general censoring scheme called ``middle censoring'' (see Jammalamadaka and Mangalam (2003)). Both the Cox proportional hazards (Cox PH) and accelerated failure time (AFT) models are considered since each model has a baseline distribution function that is modified by the presence of covariates. The key contribution presented is the estimation of the effect of the covariate as well as the baseline distribution function. We conclude with an application to a contingent valuation study.
关键词:middle censoring;Cox PH model;accelerated failure time model (AFT);contingent valuation;willingness to pay