Several Regression by combinations variables

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Several Regression by combinations variables

Mohamed Lajnef
Dear All,
  I have 11 variables, and i would like generate  combinations of those
variables by fours variables i,e 330 possibility (choose(11,4)).?
After that, make a regression analysis with this 330 possibility ?

is there a program ( or package) to do that ?

Any help would be appreciated

Regards
M

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Mohamed Lajnef,IE INSERM U955 eq 15#
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Re: Several Regression by combinations variables

Frank Harrell
This is not accepted as good statistical practice, and the resulting inferential quantities will violate all known statistical principles.
Frank
Mohamed Lajnef wrote
Dear All,
  I have 11 variables, and i would like generate  combinations of those
variables by fours variables i,e 330 possibility (choose(11,4)).?
After that, make a regression analysis with this 330 possibility ?

is there a program ( or package) to do that ?

Any help would be appreciated

Regards
M

--
####################################
Mohamed Lajnef,IE INSERM U955 eq 15#
Pôle de Psychiatrie   #
Hôpital CHENEVIER                  #
40, rue Mesly                      #
94010 CRETEIL Cedex FRANCE         #
[hidden email]           #
tel : 01 49 81 32 79   #
Sec : 01 49 81 32 90               #
fax : 01 49 81 30 99               #
####################################



        [[alternative HTML version deleted]]


______________________________________________
[hidden email] 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.
Frank Harrell
Department of Biostatistics, Vanderbilt University
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Re: Several Regression by combinations variables

Bert Gunter
In other words, "Abandon hope, all ye who enter..."

-- Bert

(Sorry, couldn't resist.  Berlioz's "March to the Gallows" from
Symphonie Fantastique also played in my head when I read Frank's
comment, but I couldn't put that in the email.)



On Mon, May 30, 2011 at 5:52 AM, Frank Harrell <[hidden email]> wrote:

> This is not accepted as good statistical practice, and the resulting
> inferential quantities will violate all known statistical principles.
> Frank
>
> Mohamed Lajnef wrote:
>>
>> Dear All,
>>   I have 11 variables, and i would like generate  combinations of those
>> variables by fours variables i,e 330 possibility (choose(11,4)).?
>> After that, make a regression analysis with this 330 possibility ?
>>
>> is there a program ( or package) to do that ?
>>
>> Any help would be appreciated
>>
>> Regards
>> M
>>
>> --
>> ####################################
>> Mohamed Lajnef,IE INSERM U955 eq 15#
>> Pôle de Psychiatrie              #
>> Hôpital CHENEVIER                  #
>> 40, rue Mesly                      #
>> 94010 CRETEIL Cedex FRANCE         #
>> [hidden email]           #
>> tel : 01 49 81 32 79             #
>> Sec : 01 49 81 32 90               #
>> fax : 01 49 81 30 99               #
>> ####################################
>>
>>
>>
>>       [[alternative HTML version deleted]]
>>
>>
>> ______________________________________________
>> [hidden email] 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.
>>
>
>
> -----
> Frank Harrell
> Department of Biostatistics, Vanderbilt University
> --
> View this message in context: http://r.789695.n4.nabble.com/Several-Regression-by-combinations-variables-tp3560123p3560662.html
> Sent from the R help mailing list archive at Nabble.com.
>
> ______________________________________________
> [hidden email] 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.
>



--
"Men by nature long to get on to the ultimate truths, and will often
be impatient with elementary studies or fight shy of them. If it were
possible to reach the ultimate truths without the elementary studies
usually prefixed to them, these would not be preparatory studies but
superfluous diversions."

-- Maimonides (1135-1204)

Bert Gunter
Genentech Nonclinical Biostatistics

______________________________________________
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