Re: [R] Exact logistic regression, data frame issue

2014-01-11 Thread peter dalgaard
On 11 Jan 2014, at 19:09 , Razi Zaidi wrote: > Hi there > > I have the dataframe below saved in an object /tst/ > > agegrp bmigrp pep n > 1 1 a 0 2 > 2 2 a 0 2 > 3 3 a 0 0 > 4 1 b 0 47 > 5

[R] Exact logistic regression, data frame issue

2014-01-11 Thread Razi Zaidi
Hi there I have the dataframe below saved in an object /tst/ agegrp bmigrp pep n 1 1 a 0 2 2 2 a 0 2 3 3 a 0 0 4 1 b 0 47 5 2 b 0 43 6 3 b 0 31 7

[R] exact logistic regression with correlated data?

2012-07-09 Thread Yue
hi all, does anyone know if R can do exact logistic regression with correlated binary data? Thanks!! Yue -- View this message in context: http://r.789695.n4.nabble.com/exact-logistic-regression-with-correlated-data-tp4635900.html Sent from the R help mailing list archive at Nabble.com. __

Re: [R] exact logistic regression

2011-02-17 Thread Łukasz Ręcławowicz
I believe that this code will work (...for very small) samples, but let some correct me if there is something wrong. require(logistf);require(combinat) permY<-permn(data$y) ntimes<-length(permY) results<-matrix(nrows=ntimes,ncols=number_of_coefficients) for(i in 1:ntimes){ results[i,]<-logistf(unl

Re: [R] exact logistic regression

2011-02-05 Thread Denis Kazakiewicz
Dear Łukas Thank you very much ...FOR EACH ROW... That's cool data2elrm<-cbind(mydata,n=1) With best regards Denis У Пят, 04/02/2011 у 22:16 +0100, Łukasz Ręcławowicz піша: > > > 2011/2/4 Den > To use elrm() I have to aggregate my data,which is really time > consuming >

Re: [R] exact logistic regression

2011-02-05 Thread Denis Kazakiewicz
l Message - > From: "Den" > To: "R-help" > Sent: Friday, 4 February, 2011 8:44:04 AM > Subject: [R] exact logistic regression > > Hate to say that, but it looks like Stata is way above R, considering > exact logistic regression. > To use elrm()

Re: [R] exact logistic regression

2011-02-04 Thread Łukasz Ręcławowicz
data2elrm<-cbind(mydata,n=rep(1,dim(mydata)[1])) > More logic would be: data2elrm2<-cbind(mydata,n=rep(1,nrow(mydata))) Sorry for obfuscation. -- Mi³ego dnia [[alternative HTML version deleted]] __ R-help@r-project.org mailing list https://

Re: [R] exact logistic regression

2011-02-04 Thread Łukasz Ręcławowicz
2011/2/4 Den > To use elrm() I have to aggregate my data,which is really time consuming > when I look for the way out through many variables. You don't have to do that. *One exception is that the binomial response should be specified as success/trials, where success gives the number of successes

[R] exact logistic regression

2011-02-04 Thread Den
Hate to say that, but it looks like Stata is way above R, considering exact logistic regression. To use elrm() I have to aggregate my data,which is really time consuming when I look for the way out through many variables. But the worst thing is that I am not not sure if I can trust to p-values in

Re: [R] exact logistic regression

2011-02-04 Thread Denis Kazakiewicz
Dear Łukasz Thank you very much for information Dear R people could you please help please with following questions Sorry for my silly questions, because I am not a mathematician. 1. Is elrm() works similar as exact regression in SAS or Stata? After double check in Stata and R some results from m

Re: [R] exact logistic regression

2011-02-03 Thread Łukasz Ręcławowicz
2011/2/3 Den > > Thank you again > It is funny how stupid I was Elrm, clogit {survival} or exactLoglinTest are only "exact-like", the truth is, R don't have it... and glm is poor. http://sas-and-r.blogspot.com/2010/12/example-818-monte-carlo-experiment.html http://sas-and-r.blogspot.com/2010/1

Re: [R] exact logistic regression

2011-02-03 Thread Den
Dear Dennis Thank you again It is funny how stupid I was. I was afraid of the word "inference" in elrm package description while performing my first search. elrm package looks like what I need. They have very good intro with examples Zamar D, McNeney B and Graham J. elrm: Software Implementing

Re: [R] exact logistic regression

2011-02-02 Thread Dennis Murphy
Hi: Try package elrm - its description file says that it performs exact logistic regression by MCMC. I found this as the first set of hits I got from # install.packages('sos') # if necessary library(sos) findFn('exact logistic regression') HTH, Dennis On Wed, Feb 2, 2011 at 8:43 AM, Den w

[R] exact logistic regression

2011-02-02 Thread Den
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