bysort ID : assert _N == 1
I am sure this has been covered in Stata Journal Nick Cox' "Speaking
Stata" columns and tips.
On Wed, Jun 24, 2009 at 11:50 AM, Jean-Benoit
Hardouin<[email protected]> wrote:
> Dear all,
> I search to verify if a variable is an identifiant that is to say that each
> row of a file have a different value on this variable than all the others
> rows.
> I want to use the -inspect- to compare the number of "unique value" (if the
> number of unique value is equal to the number of individual then the
> variable is an identifiant) but -inspect- don't count the number of
> different values if this number is superior to 100.
> Have someone an idea ?
> Best regards,
> Jean-Benoit
>
> --
>
> Jean-Benoit Hardouin, PhD
> Maitre de Conférences - Assistant Professor
> EA 4572 "Biostatistics, Clinical Research and Subjective Measures in Health
> Sciences"
> http://www.sante.univ-nantes.fr/biostat/
>
> Departement of Biomathematics and Biostatistics
> Faculty of Pharmaceutical Sciences
> University of Nantes
> 1, rue Gaston Veil - BP 53508 44035 Nantes Cedex 1 - FRANCE Email :
> [email protected]
> Personal website : http://www.anaqol.org
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>
--
Stas Kolenikov, also found at http://stas.kolenikov.name
Small print: I use this email account for mailing lists only.
*
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