search for: mima

Dear Wolfgang Viechtbauer and list members: I have discovered your "MiMa" function for fitting meta-analytic mixed-effects models through an earlier discussion on this list. I think it is extremely useful and fills an important gap. In particular, since it is programmed so transparently, it is easy to adapt it for one's own needs. (For example, I have found...

I would like to combine time-series data to test for correlations and interactions using random and fixed effects meta-analysis. So, I am looking for the right packages and documentation. I know about meta and rmeta packages of R. Are there any more? What are the diffrences in brief? Can you please suggest some references that could be used as a guide for meta-analysis in R (or S-plus)?

I had found the author's (Wolfgang Viechtbauer) earlier meta-analytic code in R, MiMa, useful. so I have been exploring metafor using an example dataset from MiMa. metafor provides a lot more. However, MiMa provided parameter estimates, standard errors, z values, etc. for individual moderators in the meta-analysis, but I don't see how to obtain these from metafor. Have you an...

Dear List, I am (again) looking at meta-regression as a way to refine meta-analytic results. What I want to do is to assess the impact of some fixed factors on the results of a meta-analysis. Some of them may be crossed with the main factor of the meta-analysis (e. g. clinical presentation of a disease, defining subgroups in each of the studies under analysis), some of them may be a grouping

Hi, I'm having a problem using LME and hopefully I can get some help. Here is what I'm doing: I have a model like this: yi = alpha + theta * xi + beta * zi + error, errors are normally distributed mean 0, var sigma^2 xi and zi are generated from normal distributions within a specified range. True values of alpha, theta, beta and sigma^2 are chosen with a specific mean and variane

Dear colleagues, I'm conducting a meta-analysis of studies evaluating adherence of HIV-positive drug users into AIDS treatment, therefore I'm looking for some advice and syntax suggestion for running the meta-regression using proportions, not the usual OR/RR frequently used on RCT studies. Have already searched already several handbooks, R-manuals, mailing lists, professors, but... not

...samba 3.0.2a and linux 2.4.25 with ReiserFS. When I copy (put) a large file (5GB) from a Windows NT terminal server sp6a to the samba-linux box, the md5sum is different between the two file. Files size are identical. I'm using this command to copy these files from windows to samba: xcopy f:\ \\mimas\backup\exchange /e /c /h /r I have also tried to delete the old files from the samba share, but nothing change: I always get two different md5sum. With smaller files (400MB) md5sum is identical. When I transfer this large file with ftp (proftpd 1.2.9 on Linux), md5sum is ok. These two systems ar...

I have little idea what actions this relates to, but I see about 200 or more of these errors each day in the messages log file: May 29 15:55:41 mima kernel: CIFS VFS: strtoUCS: char2uni of -127 returned -22 No one has complained of a problem. Does anyone know what it signifies? --Donald

Hi, i have been using asterisk CVS 19/07/2005 and asterisk-oh323-0.7.2. I now want to use oh323 with Asterisk 1.2.4+. Can anyone tell me what versions of oh323(and pwlib and oh323) they got to work with Asterisk 1.2.4+. -- thanks, yusuf

http://dovecot.org/releases/2.0/dovecot-2.0.0.tar.gz http://dovecot.org/releases/2.0/dovecot-2.0.0.tar.gz.sig As promised last Friday, here's the v2.0.0 release finally. I'm cautiously optimistic that v2.0.1 won't (have to) be released for a few weeks, since there was quite a lot of testing and fixing going on in the RC stage. Remember to read http://wiki2.dovecot.org/Upgrading/2.0

http://dovecot.org/releases/2.0/dovecot-2.0.0.tar.gz http://dovecot.org/releases/2.0/dovecot-2.0.0.tar.gz.sig As promised last Friday, here's the v2.0.0 release finally. I'm cautiously optimistic that v2.0.1 won't (have to) be released for a few weeks, since there was quite a lot of testing and fixing going on in the RC stage. Remember to read http://wiki2.dovecot.org/Upgrading/2.0

...et and (2) the lmer function (lme4 package) to perform a multilevel meta- analysis using the "long" dataset. The only reason that the lmer function is possible here is because the outcome is binary (disease .vs. no disease) and I could create a long dataset. A 3rd option is the mima function, but that is not presented here since I am interested in using lmer to extend to situations where there are study level (level 2) and individual level (level 1) predictors, something mima cannot currently handle. ----- library(meta) # Fixed and random effects models, no covariates...

...fect. Specifically, the linear mixed model packages (e.g. nlme) allow for random effects but not weighting of the y (the "weight" command of these functions means something quite different!). The rmeta package allows for both weighting and random effects, but is only for binary data. The mima function of Wolfgang Viechtbauer allows both weighting and random effects but assumes that each row of data is from a separate study (not true in my dataset). Any help would be appreciated, as I seem to have hit a dead end. Diane Srivastava -- D.S. Srivastava Associate Professor Dept. of Zoolog...

Hi I'm conducing a meta-analysis using the meta package. Here's a bit of code that works fine - tmp <- metacont(samplesize.2, pctdropout.2, sddropout.2, samplesize.1, pctdropout.1, sddropout.1, data=Dataset, sm="WMD") I would now like to control for a couple of variables (continuous and categorical) that aren't in the equation. Is meta

...> When I copy (put) a large file (5GB) > from a Windows NT terminal server sp6a > to the samba-linux box, the md5sum is > different between the two file. Files > size are identical. > I'm using this command to copy these > files from windows to samba: > > xcopy f:\ \\mimas\backup\exchange /e /c /h /r > > I have also tried to delete the old > files from the samba share, but nothing > change: I always get two different md5sum. > With smaller files (400MB) md5sum is > identical. > When I transfer this large file with ftp > (proftpd 1.2.9 on Lin...

...inal server sp6a > > > to the samba-linux box, the md5sum is > > > different between the two file. Files > > > size are identical. > > > I'm using this command to copy these > > > files from windows to samba: > > > > > > xcopy f:\ \\mimas\backup\exchange /e /c /h /r > > > > > > I have also tried to delete the old > > > files from the samba share, but nothing > > > change: I always get two different md5sum. > > > With smaller files (400MB) md5sum is > > > identical. > > &gt...

I am using read.spss in the foreign package to read an SPSS save file. For date variables I get huge values such as 11489990400. Does anyone know how to convert these values to R POSIXct date objects? Thanks in advance -Frank platform i686-pc-linux-gnu arch i686 os linux-gnu system i686, linux-gnu status major 1 minor

I have the following vector of strings (shown only the first 3 elements) > desc[1:3] [1] "hsa-let-7a MIMAT0000062 Homo sapiens let-7a" [2] "hsa-let-7a* MIMAT0004481 Homo sapiens let-7a*" [3] "hsa-let-7a-2* MIMAT0010195 Homo sapiens let-7a-2*" > is.vector(desc) [1] TRUE > A <- unlist(strsplit(desc[1:3], " ")) > A [1] "hsa-let-7a MIMAT000006...

Dear R-community, I'm struggling with a paper that reports only fragmented results of a 2by2by3 experimental design. However, Means and SDs for all cells are given. Does anyone know a package/function that helps computing an ANOVA with only Means and SDs as input (resulting in some sort of effect size and significance test)? The reason why I'm interested is simple: I'm conducting a

Hi, I would like to do a meta-analysis, i.e., a mixed-effects regression, but I don't seem to get what I want using both the nlme or metafor packages. My question: is there indeed no way to do it? And if so, is there another package I could use? Here are the details: In my meta-analysis I'm comparing different studies that report a measure at time zero and after a certain followup