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:: Volume 24, Issue 1 (9-2019) ::
Andishe 2019, 24(1): 21-32 Back to browse issues page
‎Nonlinear ‌‎R‎egression Mixed Effects Models with Normal‎/ Independent Distribution
Atieh Shabaniyan Borujeni‎ *, ‎Iraj Kazemi‎
Abstract:   (899 Views)
‎A popular application of nonlinear models with mixed effects pharmacokinetic studies‎, ‎in which the distribution of used drug during the life of the individual study‎. ‎The fit of these models assume normality of the random effects and errors are common‎, ‎but can not make it invalid results in the estimation‎. ‎In longitudinal data analysis‎, ‎typically assume that the random effects and random errors are normally distributed‎, ‎but there is a possible violation of empirical studies‎. ‎For this reason‎, ‎the analysis of the pharmacokinetic data such as normal distribution‎, ‎slashe‎, ‎t‎ - ‎student and Contaminated normal considered to be based on analytical achieved‎. ‎In this paper‎, ‎parameter estimation of nonlinear models with mixed effects on the maximum likelihood estimation method and the Bayesian approach respectively by SAS software and Open Bugs pharmacokinetic data set for being carried out‎. ‎Also‎, ‎using the model selection criteria are based on these two approaches‎, ‎we found the best fit model to the data‎.
Keywords: ‎Hierarchical Models‎, ‎Maximum Likelihood Estimate, Mixed Effects‎, ‎Repeated Measurments Data‎.
Full-Text [PDF 611 kb]   (159 Downloads)    
Type of Study: Research | Subject: General
Received: 2014/11/15 | Accepted: 2019/09/21 | Published: 2019/10/22
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Shabaniyan Borujeni‎ A, Kazemi‎ ‎. ‎Nonlinear ‌‎R‎egression Mixed Effects Models with Normal‎/ Independent Distribution. Andishe. 2019; 24 (1) :21-32
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Volume 24, Issue 1 (9-2019) Back to browse issues page
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