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Re: st: ANCOVA using only summary data
From
David Hoaglin <[email protected]>
To
[email protected]
Subject
Re: st: ANCOVA using only summary data
Date
Wed, 21 Nov 2012 15:25:56 -0500
Hi, Vinicius.
Did you mean to say that you would like to compare a continuous
outcome variable among the 3 groups?
Do your summary data include the correlation between the outcome and
the baseline measure within each of the 3 groups? If so, it may be
possible to derive the quantities that you need for the analysis of
covariance (I haven't worked out the details). If not, the answer is
No.
David Hoaglin
On Wed, Nov 21, 2012 at 11:50 AM, Marcos Vinicius
<[email protected]> wrote:
> Hello,
> Is there a way to perform ANCOVA using only a summary data ( mean ,N, SD)? If yes someone could share the stata code ?
> Many thanks,
> Vinicius.
> P.s:I would like to compare a continuous covariate among 3 groups adjusting for baseline measure.
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