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How many repeated measures in repeated measures designs? Statistical issues for comparative trials

Overview of attention for article published in BMC Medical Research Methodology, October 2003
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Title
How many repeated measures in repeated measures designs? Statistical issues for comparative trials
Published in
BMC Medical Research Methodology, October 2003
DOI 10.1186/1471-2288-3-22
Pubmed ID
Authors

Andrew J Vickers

Abstract

In many randomized and non-randomized comparative trials, researchers measure a continuous endpoint repeatedly in order to decrease intra-patient variability and thus increase statistical power. There has been little guidance in the literature as to selecting the optimal number of repeated measures.

Mendeley readers

Mendeley readers

The data shown below were compiled from readership statistics for 139 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
United Kingdom 3 2%
Italy 1 <1%
Chile 1 <1%
Spain 1 <1%
United States 1 <1%
Unknown 132 95%

Demographic breakdown

Readers by professional status Count As %
Student > Ph. D. Student 32 23%
Researcher 29 21%
Student > Master 11 8%
Student > Bachelor 9 6%
Student > Doctoral Student 8 6%
Other 30 22%
Unknown 20 14%
Readers by discipline Count As %
Medicine and Dentistry 35 25%
Psychology 19 14%
Agricultural and Biological Sciences 9 6%
Nursing and Health Professions 8 6%
Mathematics 8 6%
Other 34 24%
Unknown 26 19%