R help - Jun 2009 - Post-Hoc Test for Kruskal-Wallis Rank Sum Test

Hi list,

I would like to know if there is a way in R to execute a post-hoc test
(factor levels comparison, like Tukey for ANOVA) of a non-parametric
analysis of variance (kruskal.test() function object). I was looking for
something like the Dunn Test. I’ve searched the internet but nothing seemed
to define a way to it.

 

Do You have any suggestion? Other equivalent test maybe!

 

Thanks in advance.

 

-------------------------------------------------------------

MSc.  <mailto:r.aluizio@gmail.com> Rodrigo Aluizio

Centro de Estudos do Mar/UFPR
Laboratório de Micropaleontologia
Avenida Beira Mar s/n - CEP 83255-000
Pontal do Paraná - PR - Brasil
Fone: (41) 3511-8617

Fax: (41) 3455-3623




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It's a very simple search:

Here are the steps:
Go to one of the r-search sites. I have this URL on my Google Toolbar:

http://search.r-project.org/nmz.html

Type in:

  "post hoc" kruskal

And set the search universe to include r-help from 2002-2007.

<Search!>

Review results.

(Had I a better memory, the search strategy would have been
"nemenyi".)

--  
David
On Jun 19, 2009, at 7:10 AM, Rodrigo Aluizio wrote:
> Hi list,
>
> I would like to know if there is a way in R to execute a post-hoc test
> (factor levels comparison, like Tukey for ANOVA) of a non-parametric
> analysis of variance (kruskal.test() function object). I was looking  
> for
> something like the Dunn Test. I?ve searched the internet but nothing  
> seemed
> to define a way to it.
>
>
>
> Do You have any suggestion? Other equivalent test maybe!
>
>
>
> Thanks in advance.
>
>
>
> -------------------------------------------------------------
>
> MSc.  <mailto:r.aluizio at gmail.com> Rodrigo Aluizio
>
> Centro de Estudos do Mar/UFPR
> Laborat?rio de Micropaleontologia
> Avenida Beira Mar s/n - CEP 83255-000
> Pontal do Paran? - PR - Brasil
> Fone: (41) 3511-8617
>
> Fax: (41) 3455-3623
>
>
>
>
> 	[[alternative HTML version deleted]]
>
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
David Winsemius, MD
Heritage Laboratories
West Hartford, CT

Thank you so much Gilles, that is exactly what I’m looking for.

 

Rodrigo.

 

De: LE PAPE Gilles [mailto:lepape.gilles@neuf.fr] 
Enviada em: sexta-feira, 19 de junho de 2009 10:14
Para: r.aluizio@gmail.com
Assunto: Post-hoc test

 

Hi Rodrigo,

you can use the nparcomp function, library(nparcomp).

Gilles LE PAPE
AnaStats
14, rue de la Bretonnerie
37000 TOURS
Tél. 02 47 05 87 59
Courriel : lepape.gilles@neuf.fr
www.anastats.fr


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