st: weights panel-survey data

[mdeidda@stern.nyu.edu]

Dear all
I am estimating a 3 year panel (random effect) using survey data. To get 
correct estimates I should use sampling weights, but the command xtreg, 
re does not allow me to use weights...I can use xtreg with the option 
mle, which allow me to use analytic weights. But stata requires weights 
to be constant within panels.
Is it correct to use the weights of the last year, and assume they are 
constant within panel?
Or should I simply ignore weights?
I really appreciate your help,
Manuela


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