st: set seed in sample command

["Matilde P. Machado" <matilde.machado@uc3m.es>]

Hi everyone

I am new in this listing. I was hoping someone could help me with the 
following problem. In stata 8 when using "set seed" before the 
"sample" command I do not seem to be able to replicate the results in 
the regression below which tells me I am not getting the same 
subsample. any clues?

My code is :

sort family;
set seed 29384;

by family: sample 50 if (Nadse==2 & Nfam==2);

regress visit ins age age2 , robust ;


Thanks in advance

Matilde P. Machado
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