📄 _gpc.ado
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*! version 7.0.2 01oct2004
program define _gpc
version 6.0, missing
syntax newvarname =/exp [if] [in] [, prop BY(varlist)]
marksample touse, novarlist
quietly {
local x = 100
if "`prop'" != "" {
local x = 1
}
sort `touse' `by'
by `touse' `by': gen `typelist' `varlist' =sum(`exp') if `touse'
by `touse' `by': replace `varlist' = `x' * `exp'/`varlist'[_N]
}
end
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