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Re: st: median without current observation

From   Federico Belotti <>
Subject   Re: st: median without current observation
Date   Mon, 15 Apr 2013 10:22:52 +0200

The following code creates R mediany variables (R is the number of regions), where each variable takes the median of the distribution of "y" excluding the value of region `r'.

levelsof region, local(reglist)
foreach r of local reglist {

	egen me_y`r' = median(y) if region!=`r'
	tempvar tmp
	egen "`tmp'" = max(me_y `r')
	replace me_y `r' = `tmp' if region==`r'

hope this helps.

On Apr 15, 2013, at 9:29 AM, Andres Silva wrote:

> Dear statausers,
> I want to create a variable "mediany", which needs to be regional
> median (without considering the current value of "y"). I mean I need
> to calculate the median with the remaining values of "y" in each
> specific region.
> by region: egen mediany=median(y)
> How can I tell stata not use the current "y" value?
> I appreciate any advice, thanks, Andres
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Federico Belotti, PhD
Research Fellow
Centre for Economics and International Studies
University of Rome Tor Vergata
tel/fax: +39 06 7259 5627

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