Statistical Inference of Generalized Time- Dependent Logistic Hazard Model

In this paper ,we extend the generalized time-dependtent logistic hazard model (GTDL)proposed by Mackenzie (1996) by using  the hazard function of weibull distribution instead  of  the   baseline hazard function  as no form was assumed in this  model. thus  a modified from called  ''generalized time dependent-weibull logistic  hazard (GTD-WL)model''. The maximum   likelihood method used to  estimate the  unknown parameters  of the proposed  model. Also , we obtained  some special cases     from this model. A simulation study examines the  bais  and the mean squared errors of the maximum likelihood estimates  for the proposed  model comparing  with three  other  models .