Re: st: r(111) with egen count function

["Michael N. Mitchell" <Michael.Norman.Mitchell@gmail.com>]

Dear Elizabeth

  Some functions in -egen- will accept a variable list, some will accept a variable, ans 
some will accept an expression, etc...

  In the case of the rownonmiss() function, it will accept a varlist, and that it why 
that example works. But the -count()- function accepts only an expression, as noted in 
this snippet from the help file

 count(exp)                      (allows by varlist:)
            creates a constant (within varlist) containing the number of
            nonmissing observations of exp.  Also see
            rownonmiss() and rowmiss().

  I wonder if you really want the -rownonmiss()- function, which does accept a varlist?

I hope this helps,

Michael N. Mitchell
Data Management Using Stata      - http://www.stata.com/bookstore/dmus.html
A Visual Guide to Stata Graphics - http://www.stata.com/bookstore/vgsg.html
Stata tidbit of the week         - http://www.MichaelNormanMitchell.com



On 2010-07-12 7.36 AM, Elizabeth Allred wrote:
> I just updated my ado files and am now having a problem with the -egen- function, -count-. Fortunately, -rownonmiss- works.
>
> Stata 11.1 completely up-to-date on Windows.
>
> . egen count1=count(saa1 saa2 saa3)
> saa1saa2saa3 not found
> r(111);
>
> . egen count2=rownonmiss(saa1 saa2 saa3)
>
> . tab count2
>
>       count2 |      Freq.     Percent        Cum.
> ------------+-----------------------------------
>            1 |         58        6.18        6.18
>            2 |        187       19.91       26.09
>            3 |        694       73.91      100.00
> ------------+-----------------------------------
>        Total |        939      100.00
>
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