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st: gen..replace over period of time

From   "Ziad El-Khatib" <>
Subject   st: gen..replace over period of time
Date   Mon, 19 May 2008 09:42:17 -0700

Dear STATA lister,
it might be simple question.
My dataset has different time points, weeks 2,4,8,12,16,20,24,36 and
52 weeks on treatment.
I want to look at the adherence level during the weeks 2-24, I tried
this code, but it didn't give me what I wanted:

gen adherence =0
replace adherence =1 if pillcount <95 & (week>=2|week<=24)

Any tips?
Thank you in advance and best regards
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