Stata 15 help for qby


[R] qby -- Quietly repeat Stata command on subsets of the data


qby varlist: command

qby varlist1 [(varlist2)] [, sort rc0]: command

qbys varlist: command

qbys varlist1 [(varlist2)] [, rc0]: command


qby and qbys are convenience commands and are equivalent to

quietly by ... and quietly bysort ...

See by and quietly.

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