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re: st: New module -emh- on SSC


From   "Airey, David C" <david.airey@vanderbilt.edu>
To   "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu>
Subject   re: st: New module -emh- on SSC
Date   Fri, 15 Oct 2010 08:18:35 -0500

.

Thank you for pointing out that FAQ. Thanks also for creating the module.

> Thanks to Kit Baum, a new module, -emh-, is available on SSC.  -emh- computes
> extended Mantel-Haenszel chi-square statistics for stratified cross-tabulations.
> 
> Three types of test statistics are available.  The first type is suitable where
> both row and column variables of the tables are at least ordinal (and may
> actually be continuous), the second where the column (response) variable is at
> least ordinal--and, again, may be continuous--but the row (predictor) variable
> is categorical, and the third where both row and column variables are unordered
> categorical.
> 
> These test statistics are mentioned by Bill Sribney at the end of the FAQ "Does
> Stata provide a test for trend?". (See
> www.stata.com/support/faqs/stat/trend.html .)
> 
> These are the same test statistics that SAS's PROC FREQ reports with the CMH
> option.  SAS refers to these statistics collectively as Cochran-Mantel-Haenszel,
> and to the three types of test as "Nonzero Correlation", "Row Mean Scores
> Differ" (or "ANOVA"), and "General Association".
> 
> -emh- requires Stata version 11.1.
> 
> Bug reports and suggestions for improvements are welcome.
> 
> Joseph Coveney

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