نتایج جستجو برای: stratifi ed cox proportional hazards model
تعداد نتایج: 2242673 فیلتر نتایج به سال:
recently, reports have shown that gastric cancer has high abundance in iran and is at the second level in men, and fourth in total. this study aimed to determine the 5-year survival of gastric cancer patients and to investigate factors affecting the performance, based on tnm-7 staging system. in this study, we investigated 760 patients with gastric cancer since the beginning of 1993 to the end ...
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.
As customers are the main asset of any organization, customer churn management is becoming a major task for organizations to retain their valuable customers. In the previous studies, the applicability and efficiency of hierarchical data mining techniques for churn prediction by combining two or more techniques have been proved to provide better performances than many single techniques over a nu...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید