Dear Statlist:
I have a question about one to N matching.
I have a dataset containing three variables: id, score, case, where
case is a dummy variable indicating whether or not the observation is
in the case group. How can I match each case observation to N non-case
observation based on the score? Each case observation matches to the
N non-case observations with the closest scores, but no case
observation can match the same observation (i.e. the non-case
observation can be used only one time).
Thank you
Best
Gao
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