Dear Carlijn
I wonder whether
http://www.metafor-project.org/doku.php/tips:comp_two_independent_estimates
answers your question? If you had given us an example of your fitting
procedure we might know for sure.
On 12/12/2015 15:35, Carlijn . wrote:
Hi all,
I have a question about doing a meta-analysis, in particular a three-level
meta-analysis using Metafor.
I have estimated the mean overall effect size of males by using two different
ways:
1. moderator analysis (male = 0, female = 1) using the whole data set
2. intercept-only model with a subset of the data (only males)
The mean effect size estimated by using the categorical moderator analysis
(1) differs considerably from the overall mean effect size estimated in an
intercept-only model using a subset of the data (2).
Can someone explain this? Which method gives a better estimation of the
effect?
Thank you in advance!
[[alternative HTML version deleted]]
______________________________________________
R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
--
Michael
http://www.dewey.myzen.co.uk/home.html
______________________________________________
R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
