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Re: st: Data Envelopment Analyses

From   Scott Merryman <>
Subject   Re: st: Data Envelopment Analyses
Date   Tue, 30 Jul 2013 14:12:02 -0500

Yes with -levelsof- and -foreach-.

For example:

sysuse auto,clear
gen dmu = _n
levelsof foreign, local(levels)
foreach l of local levels {
    dea weight length = mpg if foreign == `l', saving(dea_ouptput_`l')
fs dea_o*
append using `r(files)'
tobit theta price foreign , ul(1)


On Tue, Jul 30, 2013 at 1:51 PM, Sarfraz Khan <> wrote:
> Thank you Scott. This is very helpful. One more question if you can
> answer please. You can run regression by group (e.g. regression by
> each industry group). Can one also do the above analysis by group. I
> tried to use bysort function but didn't work. Is there a way to do run
> above command by group?
> Again, thanks everyone for replying.
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