[R] Finding the two most recent dates

[Newbie19_02]

Dear all,

Thanks very much for the replies and for the help.  

This whole  data set consists of about 7000 individuals who have had
multiple blood pressure measures taken over time so I just used one
individual as an example. I'm sorry if it looked like homework...it isn't.

Jim your solution worked really well thanks.  I was thinking of things in
terms of diff time and not order, so thanks.

Natalie


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