Dear Stata Users
I am trying to use the nnmatch code to estimate average treatment effects using the nnmatch command. However, I get an error message saying "invalid 'locali'
as a further check, I imputed the same data (7 observations) as the authors use as an example in the stata journal paper (Implementing matching estimators for average treatment effects in stata), and i still get the same error message.
any guess on how to fix the problem?
thanks
best regards
enrico sette
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