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Re: st: RE: question about -levelsof-

From   David Radwin <>
To   <>
Subject   Re: st: RE: question about -levelsof-
Date   Tue, 5 Aug 2008 09:38:40 -0700

Another way to get the number of levels is to use Gary Longton and Nick Cox's -distinct-, available from SSC.

It returns the number of unique values in `r(ndistinct)' .

David Radwin //
Office of Student Research, University of California, Berkeley
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