In case "CLPL =. "
.list (varlist you need for the diagnosis)
Toyoto
At 09:44 04/06/30 +0200, you wrote:
> Dear all,
> to check whether my data recoding and selection was done properly I gave
> the commands below.
> It appeared that none of the cases in my dataset had the combination of
> FIRSTCAS equals1 and CLPL not equal to 1, which was great. Thus, after
> the "keep" I had an empty dataset, with only the names of all (about 50)
> variables. Why than did "display <variable1> <variable2>" give an
> answer, and what does it mean?
>
> . dis _N
> 8200
>
> . keep if (FIRSTCAS==1 & CLPL~=1)
> (8200 observations deleted)
>
> . dis CL_NR UNIEKNR
> 11
>
> thanks for any thougts,
> Annelies
>
>
> --
> A.M. Vos
> dept. of Public Health
> Erasmus MC
> University Medical Center Rotterdam
> P.O. Box 1738
> 3000 DR Rotterdam
> The Netherlands
> Tel: +31 (10) 4087502
> Fax: +31 (10) 4089449
> email: [email protected]
>
>
> *
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>
=========================================
Toyoto Iwata, MD, PhD
Environmental Health Sciences
Department of Social Medicine
Akita University School of Medicine
1-1-1 Hondo, Akita 010-8543, Japan
Tel +81-18-884-6084 Fax +81-18-836-2608
E-mail: [email protected]
=========================================
*
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