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Re: st: question about tabstat and table


From   "Victor M. Enciso M." <v.enciso-mora@postgrad.manchester.ac.uk>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: question about tabstat and table
Date   Thu, 26 Mar 2009 13:06:14 +0000

Thanks for your response Neil. Very useful!

Victor

Quoting "Neil Shephard" <nshephard@gmail.com>:

On Thu, Mar 26, 2009 at 12:13 PM, Victor M. Enciso M.
<v.enciso-mora@postgrad.manchester.ac.uk> wrote:
Dear all,

I have three vars: soap usage, language and study
language and study can only take two values.

If I want to get the mean of soap usage by language or study I can use
tabstat

tabstat soap usage, by(study)

or if I want a two way table of study and language:

table study language

What I want, and don't know how to get is a two way table of study and
language but instead of having the counts as result I want the mean of soap
usage.

Obviously, stata doesn't accept

tabstat soap usage, by(study language)

So, any suggestions?

Yes, -man tabstat- indicates that one of the Main options is
-statistics(statname [,,,])-

Thus you could...

bysort language: tabstat soap usage, by(study) statistics(mean)

...but you have separate tables for each language.

Other alternatives involve -collapse-ing your data to derive the means
in your sub-groupings and then reshaping and you can then
-outsheet-/-listtex-/-dataout- to the desired format (presumably you
want to put the numbers in some sort of report).  Note that -listtex-
and -dataout- are user-written commands available from ssc via -ssc
install [package]-

Yet other alternatives may be possible with the excellent -tabout-
also available from SSC

Neil

--
"The combination of some data and an aching desire for an answer does
not ensure that a reasonable answer can be extracted from a given body
of data." ~ John Tukey (1986), "Sunset salvo". The American
Statistician 40(1).

Email - nshephard@gmail.com
Website - http://slack.ser.man.ac.uk/
Photos - http://www.flickr.com/photos/slackline/
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--
Víctor M. Enciso M.
School of Mathematics
The University of Manchester
C24 Ferranti Building
PO BOX 88
M60 1QD
Manchester, UK
Ext: 55820


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