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Re: st: Summarize data


From   Nick Cox <njcoxstata@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Summarize data
Date   Fri, 8 Jun 2012 19:30:54 +0100

-egen- offers a bundle of functions (in its own sense) for summarising
rowwise. You can apply -if- and/or -in-.

Nick

On Fri, Jun 8, 2012 at 5:46 PM, Patricia Biedermann <pati.stat@gmail.com> wrote:

> I need to summarize data in the following way:
>
> My questionnaire looks like that:
>
> Question 1     option1           option2           option3 (options
> are numeric 1-5)
>
> Question 2
>
> Question 3
>
> Etc. (up to 16 question in  the same structure)
>
> The database in Stata looks like that:
>
> ID        Q1A     Q1B     Q1C     Q2A     Q2B     Q3B     …ETC  (GROUP)
>
> Respectively option1 of question 1 represents Q1A

> Now I want to summarize the data of all questionnaires in that way:
>
> -       summarize (mean) option 1 for ALL QUESTIONS AND ALL
> questionnaires (mean of Q1A, Q2A, Q3A,...etc)
>
> -       summarize (mean) option 2 etc…(mean of Q1B, Q2B, Q3B,...etc)
>
> So, maybe the solution is simpler then I think or my database is
> crap…but can anyone help me to figure out the right commands? (I
> already tried sum and collapse commands...)
>
>  Is there also a possibility to summarize it by grouping (same
> questionnaires, but e.g. different location of interview…)

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