Friday, March 03, 2006

Re: st: significant kwallis results

Great, thank you.

--- clinton.thompson@summitllc.us wrote:

> ricardo, > a user-written program, -kwallis2-, may get you > where you want to go... > --clint > > > > > Dear all, > > > > I use the nonparametric -kwallis- test and obtain > > these significant results: > > > > . kwallis outcome ,by(group) > > > > Test: Equality of populations (Kruskal-Wallis > test) > > > > +---------------------------+ > > | group | Obs | Rank Sum | > > |----------+-----+----------| > > | Placebo | 12 | 278.00 | > > | Drug 1 | 12 | 265.00 | > > | Drug 2 | 12 | 170.00 | > > | Drug 3 | 12 | 107.00 | > > +---------------------------+ > > > > chi-squared = 14.457 with 3 d.f. > > probability = 0.0023 > > > > chi-squared with ties = 14.457 with 3 d.f. > > probability = 0.0023 > > > > > > Is there a way to test which drug groups differ > while > > maintaining the correct type I errror? Maybe, > > something similar to Duncan's test after Anova, or > > multiple adjustment method. > > > > Thank you, > > Ricardo. > > > > Ricardo Ovaldia, MS > > Statistician > > Oklahoma City, OK > > > > __________________________________________________ > > Do You Yahoo!? > > Tired of spam? Yahoo! Mail has the best spam > protection around > > http://mail.yahoo.com > > * > > * For searches and help try: > > * > http://www.stata.com/support/faqs/res/findit.html > > * http://www.stata.com/support/statalist/faq > > * http://www.ats.ucla.edu/stat/stata/ > > > > > * > * For searches and help try: > * > http://www.stata.com/support/faqs/res/findit.html > * http://www.stata.com/support/statalist/faq > * http://www.ats.ucla.edu/stat/stata/ >

Ricardo Ovaldia, MS Statistician Oklahoma City, OK

__________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com * * For searches and help try: * http://www.stata.com/support/faqs/res/findit.html * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/


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