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From | David Hoaglin <dchoaglin@gmail.com> |
To | statalist@hsphsun2.harvard.edu |
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 <bioestatistico@inbox.com> 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. * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/faqs/resources/statalist-faq/ * http://www.ats.ucla.edu/stat/stata/