Re: [R] Metafor: Moderator variables for each study arm

2012-02-21 Thread Viechtbauer Wolfgang (STAT)
...@r-project.org [mailto:r-help-boun...@r-project.org] On Behalf Of Faiz Ahmad Khan Sent: Monday, February 20, 2012 16:00 To: r-help@r-project.org Subject: [R] Metafor: Moderator variables for each study arm Hello, I am trying to do a meta-analysis where each study has two arms, similar

[R] Metafor: Moderator variables for each study arm

2012-02-20 Thread Faiz Ahmad Khan
Hello, I am trying to do a meta-analysis where each study has two arms, similar to the BCG data set. However, follow-up duration was different for each study arm, so I would like to fit a model that uses the length of follow-up in each arm as a moderator. Is this possible? For example, if