gallon li schrieb: > for id 1, i want to select the last row since all censor indicator is 0; for > id 2, i want to select the row where censor ==1; for id 3, i also want to > select the row where censor==1. So if there is a 1 for censor, then I want > to select such a row, otherwise I want to select the last obs. for this id. > I am wondering if there is a quick way to solve this? > ?subset
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