Erasmo,
The commands below should give you what you need. Other list members
may be able to offer more efficient solutions.
sysuse auto, clear
keep mpg rep78 foreign
egen group = group(rep78 foreign)
replace group = . if rep78 == . | foreign == .
gen median = .
count
local n = r(N)
quietly forvalues i = 1/`n' {
gen temp = mpg if `i' != _n
bysort group: egen temp2 = median(temp)
replace median = temp2 in `i'
drop temp temp2
}
replace median = . if group == .
Friedrich
On Dec 19, 2007 6:42 AM, Erasmo Giambona <[email protected]> wrote:
> Dear Statalisters,
>
> I am using the following code to get the median of my ffo variable
> within a certain industry/year for a sample of firms:
>
> egen ffo=median(med_ffoq ), by(industry year).
>
> However, I need to exclude the own firm before calculating the
> industry median for ffo. Does anyone has any suggestions on how I
> could do this with egen or any other command?
>
> Any help would be appreciated.
> Regards,
> Erasmo
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