The relationship between the parameterizations of the Weibull model and the Cox hazards model by using application and simulation
journal of kerbala university,
2012, Volume 8, Issue 0, Pages 228-235
AbstractThe time for an event to take place in an individual is called a survival time. familiar parametric model for this type of data is the Weibull model, which is flexible model that allows for the inclusion of covariates of the survival times , Cox proportional hazards is another model also allows for the inclusion of covariates of survival times ,the research compares estimates of the slope of the covariate in the tow models with real data for (38) patients to estimate the parameters of the models by used the maximum likelihood method for the Weibull and the Breslow method for the semi-parametric Cox proportional hazards model. When the shape parameter is known, the estimate of tow models are related with the relation ( ) .Also by using the simulation to proving this relation the data was analysis by using the program (SAS 9.1) .
- Article View: 17
- PDF Download: 7