title: Optimal design for multiresponse pharmacokinetic-pharmacodynamic models - dealing with unbalanced designs.
abstract: This paper addresses the problem of determining D-optimal designs for multiresponse pharmacokinetic-pharmacodynamic (PKPD) experiments where data on each response variable can be collected at different times. Most previous multiresponse model optimal design applications have considered the case where all response variables are measured at the same time points. However in practice it may not be possible to have all responses measured at the same sampling times. We propose an optimal design method to take into account the unbalanced nature of the problem. The method developed was applied to a PKPD problem that involved describing the time course of drug plasma concentrations, heart rate and mean arterial blood pressure for both a fixed effects and mixed effects regression model. Additionally a simulation study was carried out in NONMEM for one such population optimal design problem.
authors.affiliation: Centre for Applied Pharmacokinetic Research, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK. kayode.ogungbenro@manchester.ac.uk
authors.forename: Kayode
authors.initials: K
authors.lastname: Ogungbenro
authors.forename: Ivelina
authors.initials: I
authors.lastname: Gueorguieva
authors.forename: Oneeb
authors.initials: O
authors.lastname: Majid
authors.forename: Gordon
authors.initials: G
authors.lastname: Graham
authors.forename: Leon
authors.initials: L
authors.lastname: Aarons
mesh_terms: D001794:Blood Pressure / Q000187:drug effects*; D002317:Cardiovascular Agents / Q000097:blood / Q000493:pharmacokinetics / Q000494:pharmacology; D003198:Computer Simulation; D006339:Heart Rate / Q000187:drug effects; D006801:Humans; D008954:Models, Biological; D017711:Nonlinear Dynamics; D010599:Pharmacokinetics; D012107:Research Design
chemical_list: D002317:Cardiovascular Agents