Re: [R] Metafor: Differences between two categories of a moderator

2011-06-02 Thread Viechtbauer Wolfgang (STAT)
roject.org [r-help-boun...@r-project.org] On Behalf Of Holger Steinmetz [holger.steinm...@web.de] Sent: Wednesday, June 01, 2011 10:10 AM To: r-help@r-project.org Subject: Re: [R] Metafor: Differences between two categories of a moderator Hi Wolfgang that's good news. One further small fol

Re: [R] Metafor: Differences between two categories of a moderator

2011-06-01 Thread Holger Steinmetz
Hi Wolfgang that's good news. One further small follow-up question: When I conduct multiple comparisons via the relevel-command: should I adjust the p-value? Thanks in advance, Holger -- View this message in context: http://r.789695.n4.nabble.com/Metafor-Differences-between-two-categories-of-a-

Re: [R] Metafor: Differences between two categories of a moderator

2011-05-31 Thread Viechtbauer Wolfgang (STAT)
Dear Holger, Actually, the omnibus test ("QM-test") will give you the same result regardless of which category you make the reference category (try it out!). So, it will pick up all of the differences, whether they are to the reference category or between any of the other categories. If the om