...@gmail.com]
Sent: Wednesday, May 22, 2013 20:38
To: Viechtbauer Wolfgang (STAT); r-help
Subject: Re: RE: [R] using metafor for meta-analysis of before-after
studies (escalc, SMCC)
Dear Dr. Viechtbauer:
Thank you very much for sparing your precious time to answer my question.
I still want
Dear Dr. Viechtbauer:
Thanks so much! Now all these issues are clear.
With best regards.
Qiang Yue
From: Viechtbauer Wolfgang (STAT)
Date: 2013-05-23 05:06
To: qiangmoon; r-help
Subject: RE: RE: [R] using metafor for meta-analysis of before-after studies
(escalc, SMCC)
The mean
), we can not use the percentage change
to calculate SMCC, but have to get the raw change first?
With best wishes.
Qiang Yue
From: Viechtbauer Wolfgang (STAT)
Date: 2013-05-21 10:09
To: Moon Qiang; r-help
Subject: RE: [R] using metafor for meta-analysis of before-after studies
(escalc, SMCC
Please see my answers below.
Best,
Wolfgang
-Original Message-
From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org]
On Behalf Of Moon Qiang
Sent: Thursday, May 16, 2013 19:12
To: r-help
Subject: [R] using metafor for meta-analysis of before-after studies
metafor for meta-analysis of before-after studies
At 03:27 27/04/2013, Qiang Yue wrote:
Hello, Dr. Viechtbauer.
I am trying to perform a meta-analyis on a group
of before-after studies using Metafor. I read
your webpage including your correspondence with
Dr. Dewey
(https://stat.ethz.ch/pipermail/r-help
CC: r-help
Subject: Re: Re: [R] using metafor for meta-analysis of before-after studies
At 16:50 27/04/2013, Qiang Yue wrote:

Hello, Michael.
Thanks for your kind and rapid reply, and sorry
for the inconvenience of characters.
Yes, the primary studies reported the n, the
mean percentage
At 03:27 27/04/2013, Qiang Yue wrote:
Hello, Dr. Viechtbauer.
I am trying to perform a meta-analyis on a group
of before-after studies using Metafor. I read
your webpage including your correspondence with
Dr. Dewey
(https://stat.ethz.ch/pipermail/r-help/2012-April/308946.html),
who also
regards.
Qiang Yue
From: Michael Dewey
Date: 2013-04-27 07:28
To: qiangmoon; wvb
CC: r-help
Subject: Re: [R] using metafor for meta-analysis of before-after studies
At 03:27 27/04/2013, Qiang Yue wrote:
Hello, Dr. Viechtbauer.
I am trying to perform a meta-analyis on a group
of before-after
Hello, Dr. Viechtbauer.
I am trying to perform a meta-analyis on a group of before-after studies using
Metafor. I read your webpage including your correspondence with Dr. Dewey
(https://stat.ethz.ch/pipermail/r-help/2012-April/308946.html), who also
conducted a similar study. These
At 18:39 04/04/2012, mp.sylves...@gmail.com wrote:
Greetings,
I wish to conduct a meta-analysis for which the outcome is a continuous
variable measured on the same individuals before and after an intervention.
Hence, the comparison is not made between two groups, but within groups, at
diffrent
Message-
From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org]
On Behalf Of Michael Dewey
Sent: Thursday, April 05, 2012 13:04
To: mp.sylves...@gmail.com; r-help@r-project.org
Subject: Re: [R] using metafor for meta-analysis of before-after studies
At 18:39 04/04/2012
Subject: Re: [R] using metafor for meta-analysis of before-after studies
At 18:39 04/04/2012, mp.sylves...@gmail.com wrote:
Greetings,
I wish to conduct a meta-analysis for which the outcome is a continuous
variable measured on the same individuals before and after
Greetings,
I wish to conduct a meta-analysis for which the outcome is a continuous
variable measured on the same individuals before and after an intervention.
Hence, the comparison is not made between two groups, but within groups, at
diffrent times.
Each study reports the mean outcome and
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