similar to: Exact logistic regression

Dear R folks, We completed a matched case-control study that was analyzed using conditional logistic regression. Because of the small sample size we need to calculate exact confidence intervals. The quick solution is to purchase LogExact by Cytel. However, we'd like to do this in R. Anyone have experience with this? Many thanks, Tomas ____________________________________ Tomas Aragon, MD,

Another example: Jerry Friedman's MART is available in R from Salford for the same price as the stand-alone TreeNet, even though they don't advertise it on their web site. Andy > -----Original Message----- > From: rossini at blindglobe.net [mailto:rossini at blindglobe.net] > Sent: Sunday, August 17, 2003 9:50 PM > To: rhelp > Cc: pralay at cytel.com > Subject: [R]

At JSM, I spent a bit of time with old friends at the Cytel booth (makers of StatXact/LogXact). They were wondering whether it was both feasible and of interest to create a package of the StatXact compute engine for R (to be commercially licensed, not for free!), similar to what they've done for SAS. As far as I know, it's feasible, (this is not the first commercial external package,

Hello, I have another (possibly easy) question: How to specify the size of a plot? When I draw a plot, I can freely change the size of the window, which is nice for single plots to find the best height/width ratio, but as I need a lot of plots in my work, I want to look them all the same, so I need to specify the size in advance. Thanks for help, Christoph

Sorry for the contents not relating to R. Assume there are N i.i.d zero-mean complex gaussian random variables(RVs),as w(i),0<=i<N} with known variance,from which one can generate another N RVs,as R(0)=sum over i {w(i)*w'(i)} R(1)=sum over i {w(i+1)*w'(i)} ... up to R(N-1)= w(N-1)w'(i) where w'(i) is the complex conjugate of w(i). (from viewpoint of signal

Hi, I need your help!! I imported a big coloumn vector from a txt file but it results as mode :"list" I want to change it in numeric otherwise I can't do my analysis. This is what i get: mode (data) <- "double" Error in eval(expr, envir, enclos) : (list) object cannot be coerced to type 'double' > Thanks a lot!!! Alessandra -- View this message in

Full_Name: Alessandra Iacobucci Version: 2.5.1 OS: Mac OS X 10.4.11 Submission from: (NULL) (193.48.71.92) Hi, I am making some intensive simulations for the testing of a Population Monte Carlo algorithm. This involves also a study of the CPU times in two different case. What I am trying to measure is the "real" CPU time, the one which is independent on the %CPU. I'm using the

Hello everyone, I will like to know if there is an R package to compute exact confidence intervals for the ratio of two binomial proportions. Tony. [[alternative HTML version deleted]]

Can someone clarify what I cannot make out from the documentation? The function 'clogit' in the 'survival' package is described as performing a "conditional logistic regression". Its return value is stated to be "an object of class clogit which is a wrapper for a coxph object." This suggests that its usefulness is confined to the sort of data which arise in

Hallo, I have a vector of several iterations and I have to remove /filter out all the values < than 10, how can I do this? Thanks a lot Alessandra -- View this message in context: http://www.nabble.com/removing-value-from-a-vector-tp24250608p24250608.html Sent from the R help mailing list archive at Nabble.com.

I have a case where the easiest way to draw a particular symbol would be to draw something a little bigger, and then use polygon(... , col=0) to erase the extra stuff. Just how to do this best when par('bg') = 'transparent' is, however, eluding me. I've looked through the archives and the book R Graphics without quite seeing the light. Help or pointers to help would be

CRAN (and crantastic) updates this week New packages ------------ * bdoc (1.0) Michael Anderson http://crantastic.org/packages/bdoc This package contains a function that will classify DNA barcodes as well as a few test and reference data sets. * bdsmatrix (1.0) Terry Therneau http://crantastic.org/packages/bdsmatrix This is a special case of sparse matrices, used by coxme and

Hello list I'M new I need help about print to file How i can Print more table in a file (in append) using xtable and print functions? Tanks Alessandra

Hi I must to estimate the* performance. I am try to understand which can be the eventual bottlenecks. Have you some suggestion? Can you to signal to me some problems? Thanks Alessandra

Hi, I need your help. I have a vector of numbers reflecting the switch in the perception of a figure. For a certain period I have positive numbers (which reflect the perception A) then the perception changes and I have negative numbers (perception B), and so on for 40000 iterations. I need to take the rate of this switch for my analysis. Namely, I need a new vector with numbers which reflect how

On 02/12/2018 12:52 PM, Gerd Hoffmann wrote: > Hi, > >> can we reach agreement on whether vsock should be involved in this? > > I think the best approach would be to have guest proxy and host proxy > use vsock for the wayland protocol. Use a wayland protocol extension to > reference the buffers in stdvga / ivshmem / virtio-gpu. Only the two > proxies need to

On 02/12/2018 12:52 PM, Gerd Hoffmann wrote: > Hi, > >> can we reach agreement on whether vsock should be involved in this? > > I think the best approach would be to have guest proxy and host proxy > use vsock for the wayland protocol. Use a wayland protocol extension to > reference the buffers in stdvga / ivshmem / virtio-gpu. Only the two > proxies need to

The utils package has a misc folder, and some other packages have folders that are not listed in the R-extensions documentation (?data?, ? demo?, ?exec?, ?inst?, ?man?, ?po?, ?src?, and ?tests?). I'd like to be able to put some ancillary data into a misc folder, but it's mere presence in the source folder or source tarball (created with R CMD build) does not mean that it gets put into

Hi I am a new R user and I did try elrm package to do Exact Logistic regression for my dataset ( about 170 patients with a binary dependent variable against age and 6 other binary covariates), I did not have n column because it was about individuals, I made n column with 1 for each individual, here is my code and result: > > #### Libraries needed #### > >

Hello to R people Does anybody know to calculate exact logistic regression in R? Does such option exist anywhere? Surprisingly, could not find it using search engine. It is hard to believe, however, that such useful function is not implemented in R yet? Could you help, please Thank you Denis