ziad,
my stata is 8.2 so my suggestion may need modifications if you are using a different stata version.
if your data set-up is like this:
regimen1 regimen2 visit
8.2 5.1 1
9.2 7.3 1
3.1 4.3 2
and so on (regimen being %), then you are looking at
graph bar (asis) regimen1 regimen2, over(visit)
if you want to know how many patient have adherence data presumably what you want to know is how many do not have i.e. dealing with missing values, so maybe something along these lines:
-codebook-
or
list if regimen1>=.
hth,
bw
> Date: Sat, 8 Mar 2008 12:25:07 -0800
> From: [email protected]
> To: [email protected]
> Subject: st: Graph bar code
>
> 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
> ziad
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