re: st: How do you run the Waller-Duncan test in STATA?

[David Airey <david.airey@vanderbilt.edu>]

> I am trying to run a test comparable to the Duncan test found in  
> SAS's anova
> procedures. Is there a similar test that I can run in STATA?
>
> Regards - g
> --
>
> Gail Babes
In general, with ANOVA post-hoc testing, Stata does not provide  
"canned" solutions, other than the few available in "oneway". Enough  
information is left behind by "anova" for the statistician to program  
these tests, however. If generalized to more complex models than  
"oneway", it might make a good command and Stata Journal article!

See online help and manuals for "test", "lincom", and "anova  
postestimation" if you have Stata 9. Also, see "ereturn list", after  
an anova.

Point your statistician to "http://www.stata.com/support/faqs/stat/ 
test1.html" for a head start!

Anyone have the reference to the "Waller-Duncan" test? Is this the  
multiple range test?

Duncan D B. Multiple range and multiple F tests. Biometrics 11:1-42,  
1955.

http://en.wikipedia.org/wiki/Duncan's_new_multiple_range_test

Thank God, err, no, "people" for Wikipedia.

-Dave

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