A Sas Macro for the Positive Stable Frailty Model
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منابع مشابه
A SAS MACRO FOR THE POSITIVE STABLE FRAILTY MODEL Youyi Shu and John P. Klein, Medical College of Wisconsin
A SAS macro to extend the Cox proportional hazards regression model to allow for positive stable frailties is presented. This macro computes, using a modi ed EM algorithm, estimates of the model parameters and their respective standard errors. The likelihood ratio test of the independence assumption is also provided. An example data set is used to illustrate the macro.
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