Re: st: state the same for multiple observations?

[David Kantor <kantor.d@att.net>]

I should add that if it turns out that state IS functionally 
dependent on us_id, then you can "factor out" that dependency with 
collapseunique:

collapseunique state, by(us_id)

This will yield a reduced dataset containing just the correspondence 
between us_id and state.

HTH
--David

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