Re: st: state the same for multiple observations?

[Scott Cunningham <scunning@gmail.com>]

> 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.

bysort us_id:  count if _n>1

That will let you determine first whether there exist multiples.

bysort us_id:  list if _n>1

That should let you list them.
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