Inter occasion variability in individual optimal design

Verfasser / Beitragende:
[Anders Kristoffersson, Lena Friberg, Joakim Nyberg]
Ort, Verlag, Jahr:
2015
Enthalten in:
Journal of Pharmacokinetics and Pharmacodynamics, 42/6(2015-12-01), 735-750
Format:
Artikel (online)
ID: 605533849
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024 7 0 |a 10.1007/s10928-015-9449-6  |2 doi 
035 |a (NATIONALLICENCE)springer-10.1007/s10928-015-9449-6 
245 0 0 |a Inter occasion variability in individual optimal design  |h [Elektronische Daten]  |c [Anders Kristoffersson, Lena Friberg, Joakim Nyberg] 
520 3 |a Inter occasion variability (IOV) is of importance to consider in the development of a design where individual pharmacokinetic or pharmacodynamic parameters are of interest. IOV may adversely affect the precision of maximum a posteriori (MAP) estimated individual parameters, yet the influence of inclusion of IOV in optimal design for estimation of individual parameters has not been investigated. In this work two methods of including IOV in the maximum a posteriori Fisher information matrix (FIMMAP) are evaluated: (i) MAPocc—the IOV is included as a fixed effect deviation per occasion and individual, and (ii) POPocc—the IOV is included as an occasion random effect. Sparse sampling schedules were designed for two test models and compared to a scenario where IOV is ignored, either by omitting known IOV (Omit) or by mimicking a situation where unknown IOV has inflated the IIV (Inflate). Accounting for IOV in the FIMMAP markedly affected the designs compared to ignoring IOV and, as evaluated by stochastic simulation and estimation, resulted in superior precision in the individual parameters. In addition MAPocc and POPocc accurately predicted precision and shrinkage. For the investigated designs, the MAPocc method was on average slightly superior to POPocc and was less computationally intensive. 
540 |a The Author(s), 2015 
690 7 |a Inter occasion variability (IOV)  |2 nationallicence 
690 7 |a Optimal design (OD)  |2 nationallicence 
690 7 |a Maximum a posteriori (MAP)  |2 nationallicence 
690 7 |a Fisher information  |2 nationallicence 
690 7 |a Bayesian  |2 nationallicence 
690 7 |a Pharmacometrics  |2 nationallicence 
690 7 |a Shrinkage  |2 nationallicence 
700 1 |a Kristoffersson  |D Anders  |u Department of Pharmaceutical Biosciences, Uppsala University, Box 591, 75124, Uppsala, Sweden  |4 aut 
700 1 |a Friberg  |D Lena  |u Department of Pharmaceutical Biosciences, Uppsala University, Box 591, 75124, Uppsala, Sweden  |4 aut 
700 1 |a Nyberg  |D Joakim  |u Department of Pharmaceutical Biosciences, Uppsala University, Box 591, 75124, Uppsala, Sweden  |4 aut 
773 0 |t Journal of Pharmacokinetics and Pharmacodynamics  |d Springer US; http://www.springer-ny.com  |g 42/6(2015-12-01), 735-750  |x 1567-567X  |q 42:6<735  |1 2015  |2 42  |o 10928 
856 4 0 |u https://doi.org/10.1007/s10928-015-9449-6  |q text/html  |z Onlinezugriff via DOI 
898 |a BK010053  |b XK010053  |c XK010000 
900 7 |a Metadata rights reserved  |b Springer special CC-BY-NC licence  |2 nationallicence 
908 |D 1  |a research-article  |2 jats 
949 |B NATIONALLICENCE  |F NATIONALLICENCE  |b NL-springer 
950 |B NATIONALLICENCE  |P 856  |E 40  |u https://doi.org/10.1007/s10928-015-9449-6  |q text/html  |z Onlinezugriff via DOI 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Kristoffersson  |D Anders  |u Department of Pharmaceutical Biosciences, Uppsala University, Box 591, 75124, Uppsala, Sweden  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Friberg  |D Lena  |u Department of Pharmaceutical Biosciences, Uppsala University, Box 591, 75124, Uppsala, Sweden  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Nyberg  |D Joakim  |u Department of Pharmaceutical Biosciences, Uppsala University, Box 591, 75124, Uppsala, Sweden  |4 aut 
950 |B NATIONALLICENCE  |P 773  |E 0-  |t Journal of Pharmacokinetics and Pharmacodynamics  |d Springer US; http://www.springer-ny.com  |g 42/6(2015-12-01), 735-750  |x 1567-567X  |q 42:6<735  |1 2015  |2 42  |o 10928