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st: Listing criteria

From   "Ziad El-Khatib" <>
Subject   st: Listing criteria
Date   Sat, 17 Nov 2007 22:18:51 -0800

Dear STATA lister

I have VL level per patient per clinic visit (visits are 4,8,12,16,20,24,36&52)

I did score every patient for how many times s/he got high VL (0.yes,, by this code:
egen thighvl=total(highvl),by(studyid), if select==1

i am trying to find a way to have a list of patients who had thighvl>2
including week24, i.e. there should be at least 1 highvl=1 before
visit 24 and highvl=1 by visit 24.

Any tips?

Thank you and best regards
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