Abstract #302223

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JSM 2003 Abstract #302223
Activity Number: 219
Type: Contributed
Date/Time: Tuesday, August 5, 2003 : 9:00 AM to 10:50 AM
Sponsor: ENAR
Abstract - #302223
Title: A Procedure for Multiple Pairwise Comparisons Based on Ranks
Author(s): Patrick W. Crockett*+
Companies: Constella Health Sciences
Address: 2605 Meridian Pkwy., Durham, NC, 27713-2034,
Keywords: nonparametric ; Dunn's test ; ordinal data ; Dunnett's test
Abstract:

For a nonparametric comparison of multiple treatments with a control, one may use Dunn's test. The asymptotic distribution of the statistic for this test requires the assumption that the probability of ties is zero. For ordinal categorical data we construct a statistic based on ranks and bootstrap the p value. Performance of this test is compared to Dunn's in a Monte Carlo study.

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