نتایج جستجو برای: longitudinal data

تعداد نتایج: 2500390  

ژورنال: اندیشه آماری 2015

Logic regression is a generalized regression and classification method that is able to make Boolean combinations as new predictive variables from the original binary variables. Logic regression was introduced for case control or cohort study with independent observations. Although in various studies, correlated observations occur due to different reasons, logic regression have not been studi...

Journal: :journal of research in medical sciences 0
razieh khajeh-kazemi msc student of biostatistics, department of epidemiology and biostatistics, tehran university of medical sciences, tehran, iran. banafsheh golestan department of epidemiology and biostatistics, tehran university of medical sciences, tehran, iran. kazem mohammad department of epidemiology and biostatistics, tehran university of medical sciences, tehran, iran. mahmoud mahmoudi department of epidemiology and biostatistics, tehran university of medical sciences, tehran, iran. saharnaz nedjat department of epidemiology and biostatistics, tehran university of medical sciences, tehran, iran. mohammad pakravan ophthalmic research center, shaheed beheshti university of medical sciences, tehran, iran.

background: the celebrated generalized estimating equations (gee) approach is often used in longitudinal data analysis. while this method behaves robustly against misspecification of the working correlation structure, it has some limitations on efficacy of estimators, goodness-of-fit tests and model selection criteria. the quadratic inference functions (qif) is a new statistical methodology tha...

Journal: :Japanese Journal of Biometrics 1991

Journal: :Deutsches Aerzteblatt Online 2016

Journal: :Journal of Modern Applied Statistical Methods 2004

Journal: :journal of biostatistics and epidemiology 0
habibollah esmaily department of biostatistics, health sciences research center mashhad university of medical sciences, mashhad, khorasan razavi, iran fatemeh salmani department of biostatistics, school of paramedical sciences, shahid beheshti university of medical sciences, tehran, iran mohammadreza meshkani department of statistics, school of mathematics sciences, shahid beheshti university, tehran, iran anoushirvan kazemnejad department of biostatistics, medical sciences, tarbiat modares university, tehran, iran nasserreza arghami department of statistics, school of mathematics sciences, ferdowsi university, mashhad, khorasan razavi, iran

longitudinal  study  plays  an  important  role  in  the  epidemiological,  clinical,  and  social  science studies. in these kinds of studies, every individual is observed frequently during a period of time. the statistical analysis of longitudinal presents special opportunities  and challenges. the repeated outcomes for one individual tend to be correlated among themselves also one of the pro...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید بهشتی - دانشکده علوم ریاضی 1387

چکیده ندارد.

حسینی, سید مصطفی, زراعتی, حجت, محمودی, محمود, مدرسه, الهام, نجفی, ایرج,

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...

Journal: :The American Statistician 2013

Journal: :Journal of the Royal Statistical Society: Series A (Statistics in Society) 2007

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