A STEP-DOWN PROCEDURE FOR MULTIPLE TESTS OF TREATMENT VERSUS CONTROL IN EACH OF SEVERAL GROUPS

Authors
CHEUNG SH HOLLAND B
Citation
Sh. Cheung et B. Holland, A STEP-DOWN PROCEDURE FOR MULTIPLE TESTS OF TREATMENT VERSUS CONTROL IN EACH OF SEVERAL GROUPS, Statistics in medicine, 13(21), 1994, pp. 2261-2267
Citations number
7
Categorie Soggetti
Statistic & Probability","Medicine, Research & Experimental","Public, Environmental & Occupation Heath","Statistic & Probability
Journal title
Statistics in medicine → ACNP
ISSN journal
02776715
Volume
13
Issue
21
Year of publication
1994
Pages
2261 - 2267
Database
ISI
SICI code
0277-6715(1994)13:21<2261:ASPFMT>2.0.ZU;2-6
Abstract
Cheung and Holland extended Dunnett's treatment versus control multipl e comparison procedure to the case of several groups. Dunnett and Tamh ane provided a step-down procedure more powerful than that of Dunnett for situations where the researcher's interest is in testing and not i n simultaneous confidence interval estimation. In this paper we show h ow one can use the approach of Dunnett and Tamhane to devise a testing procedure for the multi-group problem with power greater than that of Cheung and Holland. We illustrate the new procedure with reanalyses o f published data from a clinical experiment.