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st: Graph bar code

From   "Ziad El-Khatib" <>
Subject   st: Graph bar code
Date   Sat, 8 Mar 2008 12:25:07 -0800

Dear STATA lister
it might be simple/stupid question to ask.
I have 2 variables to measure patient adherence to drugs 'regimen1'
and 'regimen2'.
both variables contain adherence %.

I want to know how many patients have adherence data under every
variable, so i am running code

graph bar (count) regimen1 regimen2, over visit

it gives higher number than expected.

Any tips how to fix it?

Thank you in advance and best regards
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