similar to: Meta-Analysis of proportions

To the R-help list, In the documentation of the prop.trend.test function in the stats package, no bibliography has been provided which would allow one to find out the theoretical basis of that function and/or details of its implementation. May I suggest that some bibliography be included, as it generally happens with other statistical functions. I currently use R 2.8.0 running on Windows XP.

Dear R-list members, I am trying to put a legend just outside the plotting area of a graph. 1. Is there some way to plot symbols on the figure margin, in the same way as function "mtext" can write on the margin? 2. Is there some way to use the "legend" function (or some equivalent function) to plot a legend on the figure margin? 3. Any other way to plot either symbols or a

Dear R list members, How to produce barplots anchored to the x-axis (not floating above the x-axis) with a box around? With both following codes, the lower horizontal line of the box is below the y = 0 line: # first code x <- c(1,2,3,4) barplot(x,yaxs='i') box() # second code x <- c(1,2,3,4) op <- par(yaxs='i') barplot(x) box() par(op) The parameter yaxs='i'

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 any help

To the R help list, When using a data frame, there is no warning or error message when I refer to a non-existent variable inside the data frame. Example: ##---------------------------------------------- a <- c(1,2,3) b <- c(11,22,33) df <- data.frame(a,b) df ## correct: there is a column in df named 'a' ## the sum is correctly performed sum(df$a==2) ## incorrect: there is

Dear R-list members, I have just downloaded R version 2.11.0. Then I installed package gdata. At the end of the installation, a warning message said that package gtools could not be found. Package gdata was, after the installation, included in the "Package Index" in the help files. Messages during installation (which was made through the menu Packages / Instal package(s), choosing the

Hi, I have a CSV file where each row has at least 20 columns and some rows have up to 30 columns of data. When I use the command, Pathways<-read.table('MetaCycSample3.csv',sep=',',header=FALSE,quote='"') anything past the 21st column gets kicked down to a new row. How can I fix this? Thanks, -Nina

Hi, I would like to estimate coefficients using poisson regression and then get standard errors that are adjusted for heteroskedasticity, using a complex sample survey data. Then I will calculate prevalence ratio and confidence intervals. Can sandwich estimator of variance be used when observations aren?t independent? In my case, observations are independent across groups (clusters), but

Please excuse me for asking such basic questions: Here is my code > y=c(1.21,0.51,0.14,1.62,-0.8,0.72,-1.71,0.84,0.02,-0.12) > ybar=mean(y) > ll=length(y); > ybarv=rep(ybar,ll) > x=1:ll > plot(x,ybarv,pch=1) > segments(x[1],ybar,x[ll],ybar) What I get is a collection of small circles, with a segment "on top" of the circles, which is almost what I want. But I

Dear friends, I'm confused about how to install packages from source. I just updated R in Lenny from http://cran.fiocruz.br/bin/linux/debian/ I included in sources.list: deb http://cran.fiocruz.br/bin/linux/debian lenny-cran/ deb-src http://cran.fiocruz.br/bin/linux/debian lenny-cran/ Then: apt-get update apt-get install r-base r-base-dev Then I downloaded the package

Dear R-list members, This is in fact a question about statistics, not directly about the R software. The coin package, for conditional inference through permutation methods, has as it main function the function independence_test. One of its parameters is teststat, about which the package documentation says: teststat: "a character, the type of test statistic to be applied: either a

Dear R-list members, Once a gam (package gam) model has been fitted with family=poisson, is there some R function that could extract the diagonal elements of the smoother matrix S, to be used in a cross-validation for the selection of the best smoothing parameter, following equation 3.19 on page 48 of the book T.J. Hastie and R.J. Tibshirani, Generalized Additive Models, Chapman and Hall/CRC,

A general question- and excuse me if you find it irrelevant Are you tracking how many people finally download a specific R version by counting the number of downloads through log/ analytics software like GA etc? If so- can we see some numbers Ajay Websites- http://decisionstats.com http://dudeofdata.com Linkedin- www.linkedin.com/in/ajayohri

Dear R-list members, I would like to pose a question about the use and results of the glm() function for logistic regression calculations. The question is based on an example provided on p. 229 in P. Dalgaard, Introductory Statistics with R, 2nd. edition, Springer, 2008. By means of this example, I was trying to practice the different ways of entering data in glm(). In his book, Dalgaard

Dear R-list members, I have a data file with thousands of lines (cases), where each line contains the values of several variables. I would like to separate these lines in small groups, with each group followed by a blank line, to ease the visual inspection of the data in some situations. I am writing the output files with function write.fwf in library gdata, for correct column alignment. Below

I'm puzzled by the behaviour of factors in rma models, see example and comments below. I'm sure there's a simple explanation but can't see it... Thanks for any input John Hodgson ------------------------------------- code/selected output ----------------- library(metafor) ## Set up data (from Lenters et al A Meta-analysis of Asbestos and Lung Cancer... ##

Dear Mr. Beginning to work on Linux. I am trying to install R into Ubuntu Gustsy. I installed version 2.5.1 and worked fine. But then I tried to upgrade by adding these lines to sources.list: deb http://cran.fiocruz.br/bin/linux/debian etch-cran/ deb http://cran.fiocruz.br/bin/linux/ubuntu gutsy/ I introduced the authorization keys (as recommended) and the files were downloaded. But then I

I try load ctest, and don't have sucess > library(ctest) Error in dyn.load(x, as.logical(local), as.logical(now)) : unable to load shared library "/usr/local/lib/R/library/ctest/libs/ctest.so": /usr/local/lib/R/library/ctest/libs/ctest.so: undefined symbol: ÝfÔ What I must to do I will waiting your answer George Diniz

Hi, I've bisected the following failure of the virtio_net linux v4.10 driver to probe in QEMU v2.9.0-rc1 emulating a MIPS Malta machine: virtio_net virtio0: virtio: device uses modern interface but does not have VIRTIO_F_VERSION_1 virtio_net: probe of virtio0 failed with error -22 To QEMU commit 9a4c0e220d8a ("hw/virtio-pci: fix virtio behaviour"). It appears that adding

Hi, I've bisected the following failure of the virtio_net linux v4.10 driver to probe in QEMU v2.9.0-rc1 emulating a MIPS Malta machine: virtio_net virtio0: virtio: device uses modern interface but does not have VIRTIO_F_VERSION_1 virtio_net: probe of virtio0 failed with error -22 To QEMU commit 9a4c0e220d8a ("hw/virtio-pci: fix virtio behaviour"). It appears that adding