Re: [R] Deleting observations from baseline that don't appear in follow up

2012-04-27 Thread Jeff Newmiller
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Re: [R] Deleting observations from baseline that don't appear in follow up

2012-04-27 Thread Sarah Goslee
What about baseline[baseline$id %in% follow.up$id, ] or the same thing but using subset(). Sarah On Fri, Apr 27, 2012 at 4:36 PM, justin jarvis wrote: > Hello all, > I'm almost embarrassed to post this , it seems so easy.  Suppose I have a > baseline and follow up survey but some people are mi