We argue for the adoption of a predictive approach to model speciยฎcation. Speciยฎcally, we derive the dierence between means and the ratio of determinants of covariance matrices when a subset of explanatory variables is included or excluded from a regression. Results for an economic application are p
A POPULATION APPROACH TO INITIAL DOSE SELECTION
โ Scribed by JON WAKEFIELD; STEPHEN WALKER
- Publisher
- John Wiley and Sons
- Year
- 1997
- Tongue
- English
- Weight
- 481 KB
- Volume
- 16
- Category
- Article
- ISSN
- 0277-6715
No coin nor oath required. For personal study only.
โฆ Synopsis
Before a drug can be marketed, an initial dose must be established. Sheiner et al. argue that a population approach leads to the most informed and rational decision making. We discuss the choice of an initial dose from both a predictive and estimative viewpoint. Our criteria are based upon evaluating the probabilities that a patient from the specified population obtains a response that is at least of a specified size. We demonstrate the approach using a simulation study and compare estimation of population parameters and initial dose using Bayesian and likelihood-based methods.
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