Re: [R] metafor all list elements must be square matrices

Dear Hugh 1 - Your post is unreadable because you posted in HTML so it will be very difficult for anyone to see your V 2 - there is a separate mailing list for meta-analysis in R where you may get more helpful responses as it is monitored by authors of most of the main packages. Please see

[R] metafor all list elements must be square matrices

This may be a very simple fix, but I am struggling to reproduce Becker's (1988) imputation of control group effect sizes for single group trials. For some reason that I cannot figure out, I am getting an "All list elements in 'V' must be square matrices". Below is my V matrix, which I believe

Re: [R] Metafor multilevel metaregression: total variance increases when moderator added?

Dear Laura If you are unable for some reason to share the data why not incorporate the output into an e-mail (and please turn of HTML as it mangles everything). Putting the plots from profiling somewhere we can read them would be a useful addition. This looks at first glance one of those sit

Re: [R] Metafor multilevel metaregression: total variance increases when moderator added?

>To: r-help@r-project.org >Subject: [R] Metafor multilevel metaregression: total variance increases >when moderator added? > >Hi there, > >I am running a two level multilevel meta-regression of 170 estimates >nested within 3 informants nested within 26 studies. I run th

[R] Metafor multilevel metaregression: total variance increases when moderator added?

Hi there, I am running a two level multilevel meta-regression of 170 estimates nested within 3 informants nested within 26 studies. I run the null model to get a pooled estimate with random effects at the informant level and study level. Then I test a series of potential moderators (one at a ti

Re: [R] metafor rma.mv weights questions

| P.O. Box 616 (VIJV1) | 6200 MD Maastricht, The Netherlands | +31 (43) 388-4170 | http://www.wvbauer.com >-Original Message- >From: R-help [mailto:r-help-boun...@r-project.org] On Behalf Of Duncan, >Laura >Sent: Monday, January 30, 2017 18:18 >To: r-help@r-project.

[R] metafor rma.mv weights questions

Hi there, Question: Does the rma.mv command in metafor automically adjust the weights to account for multiple effect sizes within study or do these weights need to manually calculated and applied? Details: In setting up a multilevel meta-analysis and meta-regression with multiple effect sizes

Re: [R] metafor estimates using mods and subset do not match

Dear Kathryn I think that the author of metafor has addressed this http://www.metafor-project.org/doku.php/tips:comp_two_independent_estimates The other tips on that site are well worth reading too. On 29/07/2016 14:44, Morris, Kathryn wrote: I am running a meta-analysis using metafor and get

Re: [R] metafor estimates using mods and subset do not match

I think you should consult with a local statistician. Generally speaking, statistical questions like this tend to be OT here, and you appear to be sufficiently confused about the statistical issues that online posts would not be sufficient. Cheers, Bert Bert Gunter "The trouble with having an o

[R] metafor estimates using mods and subset do not match

I am running a meta-analysis using metafor and getting what seem to be conflicting results. #analysis with species moderator cropMeta.species<-rma(cropyi, cropvi, data=dataCropMeta, mods=~dataCropMeta$species - 1, method="HE") The output for the analysis using species as a moderator shows esti

Re: [R] metafor package

From: John Peterson [mailto:john.peterson@gmail.com] > > Sent: Tuesday, December 08, 2015 14:25 > > To: Viechtbauer Wolfgang (STAT) > > Cc: R-help@r-project.org > > Subject: Re: [R] metafor package > > > > Hi Dr. Viechtbauer, > > > > The code

Re: [R] metafor package

Psychiatry and > Neuropsychology | Maastricht University | P.O. Box 616 (VIJV1) | 6200 MD > Maastricht, The Netherlands | +31 (43) 388-4170 | http://www.wvbauer.com > > > -Original Message- > > From: John Peterson [mailto:john.peterson@gmail.com] > > Sent: Monda

Re: [R] metafor package

m: John Peterson [mailto:john.peterson@gmail.com] > Sent: Tuesday, December 08, 2015 14:25 > To: Viechtbauer Wolfgang (STAT) > Cc: R-help@r-project.org > Subject: Re: [R] metafor package > > Hi Dr. Viechtbauer, > > The code provided in the metafor projects website for subgroup i

Re: [R] metafor package

r 07, 2015 22:14 > To: Viechtbauer Wolfgang (STAT) > Subject: Re: [R] metafor package > > Hi Dr. Viechtbauer, > Thank you very much for your reply. I tried your advice and was able to > make a forest plot with only the estimates for each subgroup.For the > estiamte for each subgroup,

Re: [R] metafor package

m > -Original Message- > From: R-help [mailto:r-help-boun...@r-project.org] On Behalf Of John > Peterson > Sent: Monday, December 07, 2015 01:39 > To: r-help@r-project.org > Subject: [R] metafor package > > Hi Everyone, > > I am conducting a meta-analysis

[R] metafor package

Hi Everyone, I am conducting a meta-analysis using the metafor package. I am interested in obtaining an estimate by subgroup only without showing an overall effect. This is directly from the metafor website. How would i modify this code to only show subgroup effects? Further, I want to show weight

Re: [R] metafor - Meta-Analysis of rare events / beta-binomial regression

- Von: Viechtbauer Wolfgang (STAT) [mailto:wolfgang.viechtba...@maastrichtuniversity.nl] Gesendet: Freitag, 27. November 2015 16:01 An: Markus Kösters; 'Michael Dewey'; r-help@r-project.org Betreff: RE: [R] metafor - Meta-Analysis of rare events / beta-binomial regression I would say the

Re: [R] metafor - Meta-Analysis of rare events / beta-binomial regression

-help-boun...@r-project.org] On Behalf Of Markus > Kösters > Sent: Friday, November 27, 2015 14:38 > To: 'Michael Dewey'; r-help@r-project.org > Subject: Re: [R] metafor - Meta-Analysis of rare events / beta-binomial > regression > > Dear Michael, > > Thank you ve

Re: [R] metafor - Meta-Analysis of rare events / beta-binomial regression

co.uk] Gesendet: Freitag, 27. November 2015 13:32 An: Markus Kösters; r-help@r-project.org Betreff: Re: [R] metafor - Meta-Analysis of rare events / beta-binomial regression Dear Markus This is not a direct answer to your question, I will leave that to Wolfgang but two thoughts: 1 - if all the st

Re: [R] metafor - Meta-Analysis of rare events / beta-binomial regression

Dear Markus This is not a direct answer to your question, I will leave that to Wolfgang but two thoughts: 1 - if all the studies have very sparse data @article{bradburn07, author = {Bradburn, M J and Deeks, J J and Berlin, J A and Localio, A R}, title = {Much ado about nothing: a compa

[R] metafor - Meta-Analysis of rare events / beta-binomial regression

Dear all, I am currently writing a protocol for a meta-analysis which will analyze suicidal events. Recently, O. Kuss has (DOI 10.1002/sim.6383) published a paper that suggest using beta-binomial regression methods to incorporate double-zero studies. He states that �Methods that ignore informat

Re: [R] Metafor and forest(); not showing 'ilab' and text

europsychology | Maastricht University | P.O. Box 616 (VIJV1) | 6200 MD > Maastricht, The Netherlands | +31 (43) 388-4170 | http://www.wvbauer.com > >> -Original Message- >> From: Marco Colagrossi [mailto:marco.colagro...@gmail.com] >> Sent: Monday, August 31, 2015 18:37 >&

Re: [R] Metafor and forest(); not showing 'ilab' and text

email] <http:///user/SendEmail.jtp?type=node&node=4711682&i=1> Subject: Re: [R] Metafor and forest(); not showing 'ilab' and text The solution that you proposed works perfectly, thank you very much. I'll wait for Wolfgang answer as I'm having few doubts about the

Re: [R] Metafor and forest(); not showing 'ilab' and text

;] > > Sent: Monday, August 31, 2015 18:37 > > To: Michael Dewey > > Cc: Viechtbauer Wolfgang (STAT); [hidden email] > <http:///user/SendEmail.jtp?type=node&node=4711682&i=1> > > Subject: Re: [R] Metafor and forest(); not showing 'ilab' and te

Re: [R] Metafor and forest(); not showing 'ilab' and text

lfgang (STAT); r-help@r-project.org > Subject: Re: [R] Metafor and forest(); not showing 'ilab' and text > > The solution that you proposed works perfectly, thank you very much. > > I'll wait for Wolfgang answer as I'm having few doubts about the models. > >

Re: [R] Metafor and forest(); not showing 'ilab' and text

hatever >>>>> device >>>>> you are actually using. You can then use the 'xlim' argument to create >>>>> appropriate spacing to the left/right of the part of the plot that >>>>> shows the >>>>> estimates and their CIs. Wit

Re: [R] Metafor and forest(); not showing 'ilab' and text

os' values to create a nice looking plot that has no overlapping text and no excessive white space. An example is this: http://www.metafor-project.org/doku.php/plots:forest_plot_with_subgroups Note that it took me dozens of iterations to create that plot. You just have to start experimentin

Re: [R] Metafor and forest(); not showing 'ilab' and text

d 'ilab.xpos' values to create a nice >>> looking plot that has no overlapping text and no excessive white space. An >>> example is this: >>> >>> http://www.metafor-project.org/doku.php/plots:forest_plot_with_subgroups >>> >>> Note that it t

Re: [R] Metafor and forest(); not showing 'ilab' and text

rco.colagro...@gmail.com] Sent: Tuesday, August 25, 2015 17:59 To: Viechtbauer Wolfgang (STAT) Cc: r-help@r-project.org; Michael Dewey Subject: Re: [R] Metafor and forest(); not showing 'ilab' and text Thanks again for your help. I'm sorry to bother you but I don't get how to

Re: [R] Metafor and forest(); not showing 'ilab' and text

ssage- >> From: Michael Dewey [mailto:li...@dewey.myzen.co.uk] >> Sent: Tuesday, August 25, 2015 13:23 >> To: Marco Colagrossi; Viechtbauer Wolfgang (STAT) >> Cc: r-help@r-project.org >> Subject: Re: [R] Metafor and forest(); not showing 'ilab' and text &

Re: [R] Metafor and forest(); not showing 'ilab' and text

ot. You just have to start experimenting. Best, Wolfgang > -Original Message- > From: Marco Colagrossi [mailto:marco.colagro...@gmail.com] > Sent: Tuesday, August 25, 2015 17:59 > To: Viechtbauer Wolfgang (STAT) > Cc: r-help@r-project.org; Michael Dewey > Subject: Re: [R] Me

Re: [R] Metafor and forest(); not showing 'ilab' and text

Further comments in line as well. > -Original Message- > From: Michael Dewey [mailto:li...@dewey.myzen.co.uk] > Sent: Tuesday, August 25, 2015 13:23 > To: Marco Colagrossi; Viechtbauer Wolfgang (STAT) > Cc: r-help@r-project.org > Subject: Re: [R] Metafor and forest();

Re: [R] Metafor and forest(); not showing 'ilab' and text

lands | +31 (43) 388-4170 | http://www.wvbauer.com -Original Message- From: R-help [mailto:r-help-boun...@r-project.org] On Behalf Of Marco Colagrossi Sent: Monday, August 24, 2015 16:04 To: r-help@r-project.org Subject: [R] Metafor and forest(); not showing 'ilab' and text Hello fol

Re: [R] Metafor and forest(); not showing 'ilab' and text

fgang Viechtbauer, Ph.D., Statistician | Department of Psychiatry and > Neuropsychology | Maastricht University | P.O. Box 616 (VIJV1) | 6200 MD > Maastricht, The Netherlands | +31 (43) 388-4170 | http://www.wvbauer.com > >> -Original Message- >> From: R-help [mailto:r-he

Re: [R] Metafor and forest(); not showing 'ilab' and text

rtment of Psychiatry and Neuropsychology | Maastricht University | P.O. Box 616 (VIJV1) | 6200 MD Maastricht, The Netherlands | +31 (43) 388-4170 | http://www.wvbauer.com > -Original Message- > From: R-help [mailto:r-help-boun...@r-project.org] On Behalf Of Marco > Colagrossi

Re: [R] Metafor and forest(); not showing 'ilab' and text

Dear Marco Comments inline On 24/08/2015 15:03, Marco Colagrossi wrote: Hello folks, I have a couple of issues with the metafor package, specifically with the forest graphs. I am currently conducting a Meta-Analysis in economics throughout the metafor package. My meta-analysis has the specifi

[R] Metafor and forest(); not showing 'ilab' and text

Hello folks, I have a couple of issues with the metafor package, specifically with the forest graphs. I am currently conducting a Meta-Analysis in economics throughout the metafor package. My meta-analysis has the specific of having different cases from single studies, and this proven to be chall

Re: [R] Metafor - rma.mv function - variance components

errors of the variances in metafor (and do a Z-test)? > To: wibbelt...@hotmail.com; r-help@r-project.org > Subject: Re: [R] Metafor - rma.mv function - variance components > From: li...@dewey.myzen.co.uk > Date: Mon, 20 Apr 2015 20:24:48 + > > Carlijn Wibbelink wrote

Re: [R] Metafor - rma.mv function - variance components

April 21, 2015 10:43 > To: li...@dewey.myzen.co.uk; r-help@r-project.org > Subject: Re: [R] Metafor - rma.mv function - variance components > > Thank you for your reaction, it worked. > However, I'm wondering if this is the right way to test whether there is > significant var

Re: [R] Metafor - rma.mv function - variance components

4 <- rma.mv(y, v, random = list(~ 1 | y, ~ 1 | ID), sigma2=c(0,NA), data=dat) anova(model2,model3) anova(model2,model4) Is it possible to receive the standard errors of the variances in metafor (and do a Z-test)? > To: wibbelt...@hotmail.com; r-help@r-project.org > Subject: Re:

Re: [R] Metafor - rma.mv function - variance components

Carlijn Wibbelink wrote : Dear Carlijn I think that if you set sigma2 to a vector of length 2 it will be possible. > Hi all, > > I have a question about metafor and the rma.mv function. I have fitted a > multivariate model (effect sizes are nested within studies) and I've found two > variances:

[R] Metafor - rma.mv function - variance components

Hi all, I have a question about metafor and the rma.mv function. I have fitted a multivariate model (effect sizes are nested within studies) and I've found two variances: Variance Components: estimsqrt nlvls fixed factor sigma^2.1 0.0257 0.1602 72 no

Re: [R] 'metafor' - standardized mean difference in pre-post design studies

> Hi, I have a quesite on meta-analysis with 'metafor'. > I would like to calculate the standardized mean difference (SMD), as > Hedges' g, in pre-post design studies. > I have data on baseline (sample size, mean and SD in both the > experimental > and the control group) and at end of treatment (sa

Re: [R] metafor - Cochrane on change score in pre-post design

Comment below On 13/04/2015 20:46, Antonello Preti wrote: Hi, this is another quesite related to the use of 'metafor' for calculation of standardized mean change in pre-post design studies. Essentially, my aim is to compare different method to arrive at the same conclusion: Does the treatment wo

[R] metafor - Cochrane on change score in pre-post design

Hi, this is another quesite related to the use of 'metafor' for calculation of standardized mean change in pre-post design studies. Essentially, my aim is to compare different method to arrive at the same conclusion: Does the treatment work? The Cochrane manual advise not to calculate change score

[R] 'metafor' - standardized mean difference in pre-post design studies

Hi, I have a quesite on meta-analysis with 'metafor'. I would like to calculate the standardized mean difference (SMD), as Hedges' g, in pre-post design studies. I have data on baseline (sample size, mean and SD in both the experimental and the control group) and at end of treatment (same as before

Re: [R] metafor - code for analysing geometric means

an der Voet, H. > (2012). Transformations of summary statistics as input in meta-analysis for > linear dose-response models on a logarithmic scale: A methodology developed > within EURRECA. BMC Medical Research Methodology, 12(57). > > Best, > Wolfgang > >> -Original

Re: [R] metafor - code for analysing geometric means

Michael Dewey; Purssell, Ed; r-help@r-project.org Subject: RE: [R] metafor - code for analysing geometric means With "geometric mean 1 CI /3.92", I assume you mean "(upper bound - lower bound) / 3.92". Two things: 1) That will give you the SE of the mean, not the SD of the observa

Re: [R] metafor - code for analysing geometric means

p-boun...@r-project.org] > On Behalf Of Michael Dewey > Sent: Thursday, November 13, 2014 12:36 > To: Purssell, Ed; r-help@r-project.org > Subject: Re: [R] metafor - code for analysing geometric means > > On 13/11/2014 11:00, Purssell, Ed wrote: > > ?Dear All > >

Re: [R] metafor - code for analysing geometric means

On 13/11/2014 11:00, Purssell, Ed wrote: ?Dear All I have some data expressed in geometric means and 95% confidence intervals. Can I code them in metafor as: rma(m1i=geometric mean 1, m2i=geometric mean 2, sd1i=geometric mean 1 CI /3.92, sd2i=geometric mean 2 CI/3.92...etc, measure="

[R] metafor - code for analysing geometric means

?Dear All I have some data expressed in geometric means and 95% confidence intervals. Can I code them in metafor as: rma(m1i=geometric mean 1, m2i=geometric mean 2, sd1i=geometric mean 1 CI /3.92, sd2i=geometric mean 2 CI/3.92...etc, measure="MD") All of the studies use geometric means.

Re: [R] Metafor -can't calculate heterogeneity with non-positive sampling variances

(STAT) [wolfgang.viechtba...@maastrichtuniversity.nl] Sent: 27 August 2014 17:30 To: Owen, Branwen; r-help@r-project.org Subject: RE: [R] Metafor -can't calculate heterogeneity with non-positive sampling variances The warning message pretty much says it: When one of the variances is zero, then the I^

Re: [R] Metafor -can't calculate heterogeneity with non-positive sampling variances

wen; r-help@r-project.org Subject: RE: [R] Metafor -can't calculate heterogeneity with non-positive sampling variances The warning message pretty much says it: When one of the variances is zero, then the I^2 statistic (and various other things) cannot be computed, at least if one sticks to the u

Re: [R] Metafor -can't calculate heterogeneity with non-positive sampling variances

^2, but to consider if vi=0 is really sensible. Best, Wolfgang > -Original Message- > From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] > On Behalf Of Owen, Branwen > Sent: Wednesday, August 27, 2014 13:48 > To: r-help@r-project.org > Subject: [R]

[R] Metafor -can't calculate heterogeneity with non-positive sampling variances

Hi, I'm doing a meta-analysis in metafor. All is fine except when there are 0s in the values that i'm pooling, then i get a pooled estimate but not the I2 that i am also interested in. for example: summary(rma.1<-rma(yi,vi,data=mix,method="ML",knha=F,weighted=F,intercept=T)) (where yi are the st

Re: [R] metafor package: changing decimal in forest plot to midline decimal

om: r-help-boun...@r-project.org [r-help-boun...@r-project.org] On Behalf Of Dietlinde Schmidt [schmidt.dietli...@web.de] Sent: Thursday, July 03, 2014 3:07 PM To: r-help@r-project.org Subject: [R] metafor package: changing decimal in forest plot to midlinedecimal Dear R-Community, I need to chan

Re: [R] metafor package: changing decimal in forest plot to midline decimal

___ From: r-help-boun...@r-project.org [r-help-boun...@r-project.org] On Behalf Of Dietlinde Schmidt [schmidt.dietli...@web.de] Sent: Thursday, July 03, 2014 3:07 PM To: r-help@r-project.org Subject: [R] metafor package: changing decimal in forest plot to midline

Re: [R] metafor package: changing decimal in forest plot to midline decimal

-- > > From: Dietlinde Schmidt [mailto:schmidt.dietli...@web.de] > > Sent: Monday, July 07, 2014 10:09 > > To: Viechtbauer Wolfgang (STAT); r-help@r-project.org > > Subject: Re: [R] metafor package: changing decimal in forest plot to > > midline decimal > > > > Th

Re: [R] metafor package: changing decimal in forest plot to midline decimal

om: r-help-boun...@r-project.org [r-help-boun...@r-project.org] On Behalf Of Dietlinde Schmidt [schmidt.dietli...@web.de] Sent: Thursday, July 03, 2014 3:07 PM To: r-help@r-project.org Subject: [R] metafor package: changing decimal in forest plot to midline decimal Dear R-Community, I need

Re: [R] metafor package: changing decimal in forest plot to midline decimal

olfgang (STAT); r-help@r-project.org > Subject: Re: [R] metafor package: changing decimal in forest plot to > midline decimal > > Thanks for that link, Wolfgang. Unfortunately, there comes the Warning > with it: > "(process:3634): Pango-WARNING **: Invalid UTF-8 string passe

Re: [R] metafor package: changing decimal in forest plot to midline decimal

Dietlinde Schmidt [schmidt.dietli...@web.de] Sent: Thursday, July 03, 2014 3:07 PM To: r-help@r-project.org Subject: [R] metafor package: changing decimal in forest plot to midline decimal Dear R-Community, I need to change the punctuation of the reported weights, effect sizes and confidence in

[R] metafor package: changing decimal in forest plot to midline decimal

Dear R-Community, I need to change the punctuation of the reported weights, effect sizes and confidence intervals in a forest plot created with the forest()-function in the metafor-package. Midline decimal means that it looks like this (23·6) rather than that (23.6). Do I need to change th

Re: [R] Metafor: forest plot for subset

..@r-project.org] > On Behalf Of Verena Weinbir > Sent: Monday, May 26, 2014 18:57 > To: r-help > Subject: [R] Metafor: forest plot for subset > > Hey, > > I want to build a forest plot which states author and year for a subset > of > studies. > > But if I use t

[R] Metafor: forest plot for subset

Hey, I want to build a forest plot which states author and year for a subset of studies. But if I use this argument: resultREML <- rma(yi=yi, vi=vi, method = "REML", data = subset(empa, task=="x")) resultREML forest(resultREML, , slab=paste(empa$author, empa$year,sep = ",")

Re: [R] Metafor: Strange Trim and Fill Outcome?

ope is > positive or negative). If you think the suppression occurred on the other > side than the one that is chosen, specify the side via this argument. > > Best, > Wolfgang > > From: r-help-boun...@r-project.org [r-help-boun...@r-proj

Re: [R] Metafor: Strange Trim and Fill Outcome?

Monday, May 26, 2014 1:15 PM To: Michael Dewey Cc: r-help Subject: Re: [R] Metafor: Strange Trim and Fill Outcome? thanks for your reply, Michael! ad primary studies: yup, I have a large set of studies: At the moment I consider 126 data sets in my analysis. ad interpretation: thats an interesting

Re: [R] Metafor: Strange Trim and Fill Outcome?

thanks for your reply, Michael! ad primary studies: yup, I have a large set of studies: At the moment I consider 126 data sets in my analysis. ad interpretation: thats an interesting information. But usually there should be found an effect. ad "bit" :-): I am irritiated, because in the plots I h

Re: [R] Metafor: Strange Trim and Fill Outcome?

At 09:34 26/05/2014, Verena Weinbir wrote: Hey guys, I have tested the metafor trim and fill function (y:SD, x:SMD)on my data set and yielded the following result: 1. missing studies on the right: 34 That seems a lot of missing studies unless you have a very large set of primary studies.

Re: [R] Metafor: How to integrate effectsizes?

r calculations as a bonus. Best, Wolfgang > -Original Message- > From: Verena Weinbir [mailto:vwein...@gmail.com] > Sent: Tuesday, May 06, 2014 15:09 > To: Michael Dewey > Cc: Viechtbauer Wolfgang (STAT); <mailto:r-help@r-project.org>r-help@r-project.org &

[R] Metafor: Strange Trim and Fill Outcome?

Hey guys, I have tested the metafor trim and fill function (y:SD, x:SMD)on my data set and yielded the following result: 1. missing studies on the right: 34 2. open circles on the rights side appear to be the number of additional effects 3. adjusted d would be higher than observed d. Since nor

Re: [R] Metafor: How to integrate effectsizes?

; > > Best, >> Wolfgang >> >> > -Original Message- >> > From: Verena Weinbir [mailto:vwein...@gmail.com] >> > Sent: Tuesday, May 06, 2014 15:09 >> > To: Michael Dewey >> > Cc: Viechtbauer Wolfgang (STAT); r-help@r-project.org >&g

Re: [R] Metafor: How to integrate effectsizes?

t; Sent: Tuesday, May 06, 2014 15:09 > To: Michael Dewey > Cc: Viechtbauer Wolfgang (STAT); r-help@r-project.org > Subject: Re: [R] Metafor: How to integrate effectsizes? > > Thank you very much for your illustration, Wolfgang! It helped me a > lot. And also thank you for the pa

Re: [R] Metafor: How to integrate effectsizes?

88-4170 | http://www.wvbauer.com >> >> > -Original Message- >> > From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org >> ] >> > On Behalf Of Michael Dewey >> > Sent: Friday, April 25, 2014 16:23 >> > To: Verena Weinbir

Re: [R] Metafor: How to integrate effectsizes?

). Best, Wolfgang > -Original Message- > From: Verena Weinbir [mailto:vwein...@gmail.com] > Sent: Tuesday, May 06, 2014 15:09 > To: Michael Dewey > Cc: Viechtbauer Wolfgang (STAT); r-help@r-project.org > Subject: Re: [R] Metafor: How to integrate effectsizes? > >

Re: [R] Metafor: How to integrate effectsizes?

o: Verena Weinbir > Cc: r-help@r-project.org > Subject: Re: [R] Metafor: How to integrate effectsizes? > > At 12:33 25/04/2014, you wrote: > >Thank you very much for your reply and the book recommendation, Michael. > > > >Yes, I mean Cohen's d - sorry for th

Re: [R] Metafor: How to integrate effectsizes?

ilto:r-help-boun...@r-project.org] > On Behalf Of Michael Dewey > Sent: Friday, April 25, 2014 16:23 > To: Verena Weinbir > Cc: r-help@r-project.org > Subject: Re: [R] Metafor: How to integrate effectsizes? > > At 12:33 25/04/2014, you wrote: > >Thank you very much for your

Re: [R] Metafor: How to integrate effectsizes?

At 12:33 25/04/2014, you wrote: Thank you very much for your reply and the book recommendation, Michael. Yes, I mean Cohen's d - sorry for the typo :-) Just to make this sure for me: There is no possibility to integrate stated Cohens' ds in an R-Metaanalysis (or a MA at all), if there is no

Re: [R] Metafor: How to integrate effectsizes?

At 13:15 24/04/2014, Verena Weinbir wrote: Hello! I am using the metafor package for my master's thesis as an R-newbie. While calculating effectsizes from my dataset (mean values and standarddeviations) using "escalc" shouldn't be a problem (I hope ;-)), I wonder how I could at this point integr

[R] Metafor: How to integrate effectsizes?

Hello! I am using the metafor package for my master's thesis as an R-newbie. While calculating effectsizes from my dataset (mean values and standarddeviations) using "escalc" shouldn't be a problem (I hope ;-)), I wonder how I could at this point integrate additional studies, which only state conh

Re: [R] metafor - rstudent(res) - omitted rows

At 11:56 22/04/2014, Dipl. Kfm Dominik Wagner MSc; MSc wrote: Dear all, I am quite new to R. Now my following easy question. I use metafor and performed an outlier test with rstudent(res). This is resulting in 1000 rows of 1578 and 578 omitted rows (starting with row 598). 1. How can I dis

Re: [R] metafor - rstudent(res) - omitted rows

> -Original Message- > From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] > On Behalf Of Dipl. Kfm Dominik Wagner MSc; MSc > Sent: Tuesday, April 22, 2014 12:56 > To: r-help@r-project.org > Subject: [R] metafor - rstudent(res) - omitted rows > > Dear

Re: [R] {metafor} variance explaination for paired pre-test/posttest

Prof. Viechtbauer, thanks for the articles. I appreciate your help. Yours, John John Williams ALB Candidate, Harvard University (Expected May 2014) johnwilli...@fas.harvard.edu jawilliam...@gmail.com -- View this message in context: http://r.789695.n4.nabble.com/metafor-variance-ex

Re: [R] {metafor} variance explaination for paired pre-test/posttest

ject.org] > On Behalf Of John Williams > Sent: Tuesday, April 08, 2014 02:30 > To: r-help@r-project.org > Subject: [R] {metafor} variance explaination for paired pre-test/posttest > > In a previous post > https://stat.ethz.ch/pipermail/r-help/2012-April/308946.html > <http

[R] {metafor} variance explaination for paired pre-test/posttest

In a previous post https://stat.ethz.ch/pipermail/r-help/2012-April/308946.html , the following calculation was given for imputing the variance of change scores for paired studies: // begin quote 2) Often, the dependent variable is n

Re: [R] metafor combining escalc effect-sizes

At 09:42 30/03/2014, Purssell, Ed wrote: Dear All I have a question about combining effect sizes generated by escalc in metafor. I realise these may be stupid things to do; but they are deliberately so to explain what I mean - I don't intend doing this! I have 3 studies; each of which has

[R] metafor combining escalc effect-sizes

Dear All I have a question about combining effect sizes generated by escalc in metafor. I realise these may be stupid things to do; but they are deliberately so to explain what I mean - I don't intend doing this! I have 3 studies; each of which has a different measure of effect/presents the

Re: [R] Metafor - why use escalc?

ct.org] On Behalf Of Purssell, Ed [ed.purss...@kcl.ac.uk] Sent: Friday, March 14, 2014 10:11 AM To: r-help@r-project.org Subject: [R] Metafor - why use escalc? Dear All As you can specify the data directly to rma.uni via n1i, m1i, sd1i, etc in Metafor, why would you ever want to use escalc to ca

[R] Metafor - why use escalc?

Dear All As you can specify the data directly to rma.uni via n1i, m1i, sd1i, etc in Metafor, why would you ever want to use escalc to calculate yi and vi? Aren't these just intermediate steps to the final pooled effect size which is calculated by rma.uni; or is there some advantage to calcul

Re: [R] metafor package

14 at 6:39 AM To: "r-help@R-project.org" , "Nathan Leon Pace, MD, MStat" , Michael Dewey , S Ellison Subject: RE: [R] metafor package >Good advice already from Michael and S Ellison. > >I must apologize for the 'hack-job of a function' called forest() in &

[R] metafor package

bound and lower than your lowest confidence interval lower bound. The bars may run into the text, but that may be fixed by stretching the output window in R. Will Shadish ** Date: Tue, 11 Feb 2014 22:11:20 + From: Nathan Pace To: "r-hel

Re: [R] metafor package

> -Original Message- > I must apologize for the 'hack-job of a function' called forest() in metafor. Well, certainly no apology needed there! > I realized a while ago that people would prefer more fine-grained control over > the various elements of the plot (this has come up a few times

Re: [R] metafor package

+31 (43) 388-4170 | http://www.wvbauer.com > -Original Message- > From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] > On Behalf Of Michael Dewey > Sent: Wednesday, February 12, 2014 12:50 > To: Nathan Pace; r-help@R-project.org > Subject: Re: [R

Re: [R] metafor package

roject.org > Subject: [R] metafor package > > Hi, > > I have a random effects meta analysis of a proportion (logit transformation) > using rma.glmm. > > I have created a forest plot of the proportion (inverse logic transformation) > using forest.rma. > > I have

Re: [R] metafor package

At 22:11 11/02/2014, Nathan Pace wrote: Hi, I have a random effects meta analysis of a proportion (logit transformation) using rma.glmm. I have created a forest plot of the proportion (inverse logic transformation) using forest.rma. I have added the credibility interval. The forest plot i

[R] metafor package

Hi, I have a random effects meta analysis of a proportion (logit transformation) using rma.glmm. I have created a forest plot of the proportion (inverse logic transformation) using forest.rma. I have added the credibility interval. The forest plot is saved as a pdf. The dotted line and whisk

[R] metafor escalc(measure="SMCC")

Many thanks to Wolfgang Wiechtbauer for the explanation. Sincerely Mario Petretta Message: 31 Date: Thu, 21 Nov 2013 19:08:14 +0100 From: "Viechtbauer Wolfgang (STAT)" To: "petre...@unina.it" , "r-help@r-project.org" Subject: Re: [R

[R] metafor escalc(measure="SMCC")

e...@unina.it" , "r-help@r-project.org" Subject: Re: [R] metafor escalc(measure="SMCC") Message-ID: <077e31a57da26e46ab0d493c9966ac730d99255...@um-mail4112.unimaas.nl> Content-Type: text/plain; charset="us-ascii" Dear Mario, You can always

Re: [R] metafor escalc(measure="SMCC")

t; To: r-help@r-project.org > Subject: [R] metafor escalc(measure="SMCC") > > Many thanks to Wolfgang Viechtbauer for the prompt and clear answer. > However, I'm unable to understand what .cmicalc mathematically does in the > code line: > > cmi <- .cmicalc

Re: [R] metafor escalc(measure="SMCC")

t; To: r-help@r-project.org > Subject: [R] metafor escalc(measure="SMCC") > > Dear all, > > I use R 3.0 for Windows. > > I ask how escalc(measure="SMCC") [metafor package] mathematically > calculate yi and vi when only change score and SD change s

[R] metafor escalc(measure="SMCC")

Dear all, I use R 3.0 for Windows. I ask how escalc(measure="SMCC") [metafor package] mathematically calculate yi and vi when only change score and SD change score are provided. I used the example (repoted below) posted by Qiang Yue at: http://r.789695.n4.nabble.com/using-metafor-for-meta

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