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Re: st: xtile and "by" question

From   "Clive Nicholas" <>
Subject   Re: st: xtile and "by" question
Date   Tue, 8 May 2007 23:22:42 +0100

On 08/05/07, Edgard Alfonso Polanco Aguilar <> wrote:

I'm working with a database which consists on income by month and
region. I need to classify the income by percentiles by city and month
because there's a wide dispersion on income levels across cities, to the
point that the highest income in one is on the median of another. I know
the command of choice for this task is xtile, but Stata doesn't allow me
to use it with "by" like in "by city date: xtile var=income nq(10)". I'm
working in Stata 9 SE for Windows.
-findit xtile2-

Clive Nicholas
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