--- [email protected] wrote:
> I am trying to model the effect of a treatment (x-variable) on an
> outcome (y-variable). My database contains information of several
> regions, how could I work only with two regions?
Say the variable containing information on the regions is called region
and you want to do your analysis for regions 1 and 2, then you type
regress y x if region == 1 | region == 2
For more see: -help if- .
hope this helps,
Maarten
-----------------------------------------
Maarten L. Buis
Department of Social Research Methodology
Vrije Universiteit Amsterdam
Boelelaan 1081
1081 HV Amsterdam
The Netherlands
visiting address:
Buitenveldertselaan 3 (Metropolitan), room Z434
+31 20 5986715
http://home.fsw.vu.nl/m.buis/
-----------------------------------------
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