השוואת שיטות

	פרמקוקינטיקה של אוכלוסיות	מודל היררכי בייסיאני
תחום	פרמקומטריקה	בייסיאני
משפחה	Regression model	Bayesian methods
שנת המקור	1977	2006
הוגה השיטה	Sheiner, Rosenberg & Marathe	Gelman & Hill (2006); Bayesian multilevel tradition
סוג	Nonlinear mixed-effects regression model	hierarchical probabilistic model
מקור מכונן	Sheiner, L. B., Rosenberg, B., & Marathe, V. V. (1977). Estimation of population characteristics of pharmacokinetic parameters from routine clinical data. Journal of Pharmacokinetics and Biopharmaceutics, 5(5), 445–479.	Gelman, A. & Hill, J. (2006). Data Analysis Using Regression and Multilevel/Hierarchical Models. Cambridge University Press.
כינויים	PopPK, Nonlinear Mixed-Effects Modeling, NONMEM Approach, Popülasyon Farmakokinetiği	multilevel Bayes, Bayesian multilevel model, Bayesian HLM, partial pooling model
קשורות	2	4
תקציר	Population Pharmacokinetics (PopPK) is a nonlinear mixed-effects modeling framework that characterizes how drugs are absorbed, distributed, metabolized, and eliminated across a patient population, estimating both typical population parameters and the magnitude of between-subject variability. Introduced by Sheiner, Rosenberg, and Marathe in 1977, it enables parameter estimation from sparse, routinely collected clinical data—making it indispensable in drug development, regulatory submissions, and individualized dosing.	Bayesian hierarchical modelling, popularised by Gelman and Hill (2006), is a Bayesian approach to nested data structures — such as students within schools within districts — that estimates separate parameters at each level while allowing those levels to share statistical strength through a mechanism called partial pooling. Where a classical hierarchical linear model treats group means as fixed unknown quantities, the Bayesian version places hyperprior distributions on those group means so that information flows freely across levels, producing more reliable group-level estimates whenever any individual group has few observations.