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st: xtile and "by" question


From   Edgard Alfonso Polanco Aguilar <e-polanc@uniandes.edu.co>
To   statalist@hsphsun2.harvard.edu
Subject   st: xtile and "by" question
Date   Tue, 08 May 2007 16:42:58 -0500

Hello everybody,

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.

Thaks!

Edgard

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fn:Edgard Alfonso Polanco Aguilar
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