Sample size estimation for comparing two or more treatment groups in clinical trials
作者:
Simon J. Day,
David F. Graham,
期刊:
Statistics in Medicine
(WILEY Available online 1991)
卷期:
Volume 10,
issue 1
页码: 33-43
ISSN:0277-6715
年代: 1991
DOI:10.1002/sim.4780100109
出版商: Wiley Subscription Services, Inc., A Wiley Company
数据来源: WILEY
摘要:
AbstractMethods for estimating required sample size for comparing two population means have been published. Most involve the use of complicated formulae and tables. These methods are limited to comparing two groups. Although techniques exist to determine sample sizes for comparing more than two groups, they are intrinsically far more complicated. A simple linear nomogram is proposed as a solution to these problems, and its use is illustrated with examples of parallel group, ordered parallel group and factorial designs.
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