Abstract
The paper addresses estimating and testing treatment effects with multivariate outcomes in clinical trials where imperfect diagnostic devices are used to assign subjects to treatment groups. The paper focuses on the pre-post design and proposes two novel methods for estimating and testing treatment effects. In addition, methods for sample size and power calculations are developed. The methods are compared with each other and with a traditional method in a simulation study. The new methods show significant advantages in terms of power, coverage probability, and required sample size. The application of the methods is illustrated with data from electroencephalogram (EEG) recordings of alcoholic and control subjects.
Original language | English |
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Pages (from-to) | 535-565 |
Number of pages | 31 |
Journal | Pharmaceutical Statistics |
Volume | 21 |
Issue number | 3 |
DOIs | |
State | Published - May 1 2022 |
Bibliographical note
Publisher Copyright:© 2021 John Wiley & Sons Ltd.
Keywords
- EM algorithm
- F-approximation
- finite mixture
- method of moments
- sample size determination
ASJC Scopus subject areas
- Statistics and Probability
- Pharmacology
- Pharmacology (medical)