||The parametric accelerated failure time(AFT) model for analyzing the right-censored survival data usually assumes Weibull, lognormal or log-logistic distribution for the lifetime variable of interest. When the covariates are presented, the AFT model is often expressed log-linear|
form. In this study, however we consider the parametric accelerated failure time model with lifetime which is distributed for a generalized gamma distribution, including, in particular, Weibull, lognormal and gamma distributions. In addition, we use local likelihood estimation to investigate the possible transformation of the covariates that showing in the log-linear model. A simulation study is further implemented for evaluating the bias and mean squares error of the estimated medians for a
variety of AFT models and survival distributions. Finally, we use a data to illustrate the application of the model, under study.
||Bagdonavicius, V. and Nikulin, M.(2001). Accelerated Life models Modeling and Statistical Analysis. Springer: New York.|
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