Try adding a -set seed ### - in your do-file prior to running the
-nearmrg- and then see if the results are reproducible.
Given its a "fuzzy" matching algorithm it doesn't surprise me that you
get different results on subsequent runs, and setting a seed is the
way to circumvent such "problems".
Neil
--
"The combination of some data and an aching desire for an answer does
not ensure that a reasonable answer can be extracted from a given body
of data." ~ John Tukey (1986), "Sunset salvo". The American
Statistician 40(1).
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