نتایج جستجو برای: cox models
تعداد نتایج: 943575 فیلتر نتایج به سال:
Background and Aim: In many medical studies along with longitudinal data, which are repeatedly measured during a certain time period, survival data are also recorded. In these situations, using models such as, mixed effects models or GEE method for longitudinal data and Cox model for survival data, are not appropriate because some necessary assumptions are not met. Instead, the joint models hav...
Lloyd J. Edwards. Errors in Variables and Properties of Statistical Inference (under the direction of Dr. P. K. Sen.) The objective here is to investigate the effects errors in variables have on tests of separate families of linear hypotheses (Le., non-nested linear hypotheses) using the methodology introduced by D. R. Cox (1961, 1962). Two hypotheses are called separate if an arbitrary simple ...
Most existing copula models for dependent censoring in the literature assume that parameter defining is known. However, prior knowledge on this dependence often unavailable. In article we propose a novel model under which does not need to be The based parametric relation between survival time (T) and (C), whereas marginal distributions of T C follow semiparametric Cox proportional hazards model...
How should statistical models used for assigning prices or eligibility status in insurance, college enrollment, social-benefit provision, and other settings be implemented when there is a concern about discrimination? In many settings policies are in place that prohibit the direct use of factors such as race, gender, and age. However, there is a large and contentious gray area surrounding the u...
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