Antonio would have meant to post this mail to the Statalist,
so I send here.
> "Antonio Rodrigues Andres" <[email protected]>
>
> I have a panel data set for 15 countries over the period 1970-1998. 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 your answer
> Antonio
>
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