نتایج جستجو برای: survival models

تعداد نتایج: 1214086  

Journal: :Journal of Computational and Graphical Statistics 2019

H. Mahmoudzadeh, M. Babaei , M. R. Ahmadi , M. Shamsaei Mehrjand ,

 During the early stages of white fish, survival rate is a very effective parameter on future fry’s sustainability, especially when they are going to be released into the natural habitat for restocking. The aim of this study is to define relationships between morphological and functional traits and the survival rate of the European white fish fry (Coregonus lavaretus) when they were fed with di...

جمالی, هدایت اله, خانجانی, نرگس, فرارویی, محمد, پریسای, ظفر, چرامی, مریم,

  Background & Objectives : Gastric cancer has a low survival and remains a serious threat to the health of human life, especially in developing countries such as Iran. The present study was performed to estimate the main effective factors in the survival rate of patients with gastric cancer in the Province of Kohgilouyeh & Boyerahmad.   Methods: All cases of gastric cancer in Kohgiloyeh and...

Journal: :hepatitis monthly 0
bahareh khosravi department of biostatistics, shiraz university of medical sciences, shiraz, ir iran saeedeh pourahmad department of biostatistics, shiraz university of medical sciences, shiraz, ir iran; colorectal research center, shiraz university of medical sciences, shiraz, ir iran; department of biostatistics, shiraz university of medical sciences, p. o. box: 71345-1874, shiraz, ir iran. tel/fax: +98-7132349330 amin bahreini department of organ transplantation, ahvaz university of medical sciences, ahvaz, ir iran saman nikeghbalian department of organ transplantation, shiraz university of medical sciences, shiraz, ir iran goli mehrdad center of namazee hospital organ transplant, shiraz, ir iran

conclusions the present study detected more accurate results for ann method compared to those of cox ph model to analyze the survival of patients with liver transplantation. furthermore, the order of effective factors in patients’ survival after transplantation was clinically more acceptable. the large dataset with a few missing data was the advantage of this study, the fact which makes the res...

Journal: :The Stata Journal: Promoting communications on statistics and Stata 2002

Journal: :Environmental Health Perspectives 1990

Journal: :Lifetime data analysis 2018
Walter Dempsey Peter McCullagh

Survival studies often generate not only a survival time for each patient but also a sequence of health measurements at annual or semi-annual check-ups while the patient remains alive. Such a sequence of random length accompanied by a survival time is called a survival process. Robust health is ordinarily associated with longer survival, so the two parts of a survival process cannot be assumed ...

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