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st: help with understanding syntax 'gen last=_n==_N'
i am trying to understand one of the do-files application for stata. one of
the lines read:
qui by study: gen last=_n==_N
my understanding so far: this is quietly, sort according to study, and as a
result, to generate a variable last fulfilling this condition _n==-N.
although i have the output, i would like to know what in general does gen
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