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st: weigths


From   "Antonio Rodrigues Andres" <ara@sam.sdu.dk>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: weigths
Date   Tue, 03 Aug 2004 10:41:05 +0200

My
 dependent variable is the mortality rate. Since the variance of
ln(d/p)
 is inversely proportional to p (population), this implies 
heteroskedasticity. To correct for it, observations should be weighted 
by the square root of the denominator of the mortality rate, i.e.,
 population. In Stata,   i am using
 
 xi: regress y x1 x2 i.country i.year [w=1/pop], 
 Is that correct? I might also use the robust option
 I would appreciate any answers
> Antonio

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