Thanks very much for the reply Michael.I guess I have to combine some levels to make categorical variable to a binary variable. Dushanthi > Date: Sat, 28 Jul 2012 16:38:24 +0100 > To: dushan...@bell.net; r-help@r-project.org > From: i...@aghmed.fsnet.co.uk > Subject: RE: [R] "metafor" package, proportions: single groups wrt to a > categorical dependent variable > > At 15:47 28/07/2012, Dushanthi Pinnaduwage wrote: > > > >Dear Michael, > > > >Thanks very much for your quick response. > > > >My outcome is not binary. Outcome has more than 2 values (levels) > >and I have counts for the levels. > >I have not written a code yet. > > Well as the name of the key function in metafor (rma.uni) suggests > metafor at present does univariate meta-analysis. If you can reduce > the outcome to a single measure of effect (perhaps using proportional > odds or continuation ratio) then you can enter that with its standard > error using the yi and sei parameters to rma.uni. If the nature of > your outcome does not allow that then you have a multivariate > meta-analysis. In that case you could try mvmeta (available from CRAN) > > > > >I would like to know if escalc() can handle categorical outcome data > >(more than 2 proportions). If so, how can I input > >the counts of each level of the categorical outcome to this function. > > > >Hope it is little clear now. > > > >Dushanthi > > > > > > > >You do not give us very much to go on here. When you say your outcome > > >is proportions do you mean your outcome has more than two values and > > > you are generating (or have been provided with) several proportions > > > for each study or do you mean it is a binary variable? If the latter > > > do you in fact have the numerators and denominators or just the > > > proportion? It would also help if you showed us the code you have > > > tried and the error message you got (if any) or told us the > > > discrepancy between the output you obtained and that which you expected. > > > > > > > > > Date: Sat, 28 Jul 2012 14:25:08 +0100 > > > To: dushan...@bell.net; r-help@r-project.org > > > From: i...@aghmed.fsnet.co.uk > > > Subject: Re: [R] "metafor" package, proportions: single groups > > wrt to a categorical dependent variable > > > > > > At 01:44 28/07/2012, Dushanthi Pinnaduwage wrote: > > > > > > > > > > > > > > > >Dear all, I am using R version 2.15.0 and 'metafor' package version > > > >1.6-0. Can this version of the package handle proportions from > > > >a categorical dependent variable for single studies?If so how do I > > > >set up my dataframe for the raw data from different studies? Also > > > >how do I give inputs, specially xi, mi (or ni) to the function > > > >escalc()? Thanks,Dushanthi > > > > > > You do not give us very much to go on here. When you say your outcome > > > is proportions do you mean your outcome has more than two values and > > > you are generating (or have been provided with) several proportions > > > for each study or do you mean it is a binary variable? If the latter > > > do you in fact have the numerators and denominators or just the > > > proportion? It would also help if you showed us the code you have > > > tried and the error message you got (if any) or told us the > > > discrepancy between the output you obtained and that which you expected. > > > > > > > > > > > [[alternative HTML version deleted]] > > > > > > Michael Dewey > > > i...@aghmed.fsnet.co.uk > > > http://www.aghmed.fsnet.co.uk/home.html > > > > > Michael Dewey > i...@aghmed.fsnet.co.uk > http://www.aghmed.fsnet.co.uk/home.html > [[alternative HTML version deleted]]
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