Abstract #301624

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JSM 2003 Abstract #301624
Activity Number: 254
Type: Contributed
Date/Time: Tuesday, August 5, 2003 : 12:00 PM to 1:50 PM
Sponsor: Section on Statistical Computing
Abstract - #301624
Title: Implementation and Performance of Categorical Data Analysis Methods and Exact Procedures in Six Statistical Software Packages
Author(s): Robert A. Oster*+ and Joseph M. Hilbe
Companies: University of Alabama, Birmingham and
Address: LNB 1078, Birmingham, AL, 35294-0001,
Keywords: statistical computing ; nonparametric statistical methods ; software testing
Abstract:

The use of categorical data analysis methods has become increasingly important during recent years, especially to analyze data from clinical, public and environmental health, and epidemiology studies. As a result, categorical data analysis methods, particularly those involving exact tests, have been developed more fully in statistical literature and implemented more widely in statistical software packages. The implementation and performance of these methods in five statistical software packages devoted completely or partly to analyzing categorical data are discussed. The five software packages include StatXact, LogXact, Testimate, Stata, and SAS. In addition, one software package specializing in exact procedures for parametric statistical inference, XPro, is discussed. All six software packages are examined according to criteria that should be of interest to statisticians, researchers, and data analysts who need to perform categorical data analysis and exact statistical tests. It is shown that the software packages differ in their capabilities for these statistical methods and in their potential user audiences. Recommendations regarding these software packages are provided.


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