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st: Re: state the same for multiple observations?


From   "Michael Blasnik" <michael.blasnik@verizon.net>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: Re: state the same for multiple observations?
Date   Tue, 14 Nov 2006 10:04:06 -0500

...This should flag all observations within a us_id if there is more than one state listed for that us_id:

bysort us_id (state): gen byte diffstate=state[1]!=state[_N]

Michael Blasnik


----- Original Message ----- From: "Ms. Marilyn Ibarra" <ibarra@uga.edu>
To: <statalist@hsphsun2.harvard.edu>
Sent: Tuesday, November 14, 2006 9:41 AM
Subject: st: state the same for multiple observations?



Anyone have an idea of how I can do the following:

The data looks something like this:

us_id state
1 CA
1 CA
2 VA
3 PA
3 TX

I need to know if when a us_id has multiple observations is the state the same for each observation in that us_id. If the state is different for a given us_id I need to be able to easily identify those cases.

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