Hi, I want to merge two data sets in the usual way, by a certain criterion, matching only the observations (by id) that are in both data sets. What I would like to know is how I might go about collecting the data that does not make it through, i.e. the "id's" that are not in both sets. We would like to see both data sets for our study. I was directed toward the tables statement as a way of doing this: tables var / out = newdata; But, the more I look into it, it doesn't seem like what I want to use. If I were to use it, where should I place this in my merge step? What should I use instead? Thank you very much.
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