This may help:
FAQ . . Calculating variables containing weighted group summary statistics
. . . . . . . . . . . . . . . . . . . . . N. J. Cox and S. P. Jenkins
1/03 I want to calculate a variable containing weighted
group summary statistics, but I do not want to
collapse the data and egen does not support weights.
How can I do this?
http://www.stata.com/support/faqs/data/weighted.html
Nick
[email protected]
Sara Hussain
> I would be grateful for advice on the xtile function. I have
> created a categorical variable denoting quintile group
> membership by region:
>
> egen quin=xtile(income), by region nq(5) weight(wght)
>
> I would like to know how I can create a variable that
> includes a percentile value eg lowest quintle using weights.
> I tried the folllowing but weights were not allowed:
>
> by region: egen lquint=pctile(income), p(20)
>
> Can xtile be modified for this?
>
> Also, please could anyone suggest a command incorporating
> weights to create a mean variable for each group (in my case, region)?
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