[R] Cox model with multiple events - Proportional Hazards Assumption

Due to the nature of the time-dependent covariates, I don't need to analyse the assumptions of the proportional hazards associated with the time-dependent covariates. Is it right? ​Thanks for your attention. Best regards, Helena. [[alternative HTML version deleted]]

Re: [R] FrailtyHL package does not work

here, x is a generic independent variable. Thank you very much for your help! Regards, Helena. ___ I don't know much about the frailtyHL package, but from the description it appears to be fitting the same model as coxme. The latter is designed to w

[R] FrailtyHL package does not work

hat can I do to deal with this problem? Thanks, in advanced, for your help. Best regards, Helena Mouriño Nunes. __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/pos

[R] Standardised Pearson residuals

Dear all, I'm using the package "pscl" for adjusting a Zero-Inflated Negative Binomial Regression to my data set. I would like to know if it is possible to compute the standardised Pearson residuals from the output of this package. Thanks in advanced. Best

[R] mgcv - markeov random field option

help me found those. Thanks a lot. Cheers -- Helena Baptista [[alternative HTML version deleted]] __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org

Re: [R] the problem about sample size

7 >From coxph: n= 2087, number of events= 1721 If the number of groups in lme = n in coxph, why am I getting the error message that sample sizes differ? Many thanks for your help. Helena From: Petr PIKAL [petr.pi...@precheza.cz] Sent: Thursday, March

Re: [R] tikzDevice install problem

OS linux 2.6.38 R version 2.12.1 I tried the CRAN german mirrors http://mirrors.softliste.de/cran/ http://ftp5.gwdg.de/pub/misc/cran and others from the UK... -- View this message in context: http://r.789695.n4.nabble.com/tikzDevice-install-problem-tp3837315p3837457.html Sent from the R hel

[R] tikzDevice install problem

Hi everybody! I'm trying to install the tikzDevice package, and I keep on getting the > ERROR: dependency ‘filehash’ is not available for package ‘tikzDevice’ I tried install.packages('filehash') and I get > package ‘filehash’ is not available Does anybody have the same problem or any hint? than

[R] Using MCMC sampling to estimate p values with a mixed model

Hi everyone, Apologies if this is a silly question but I am a student and this is my first time using R so I am still trying to educate myself on commands, models e.t.c I have a mixed model with four dichotomous fixed factors and subject as a random factor (as each person completed four vignett

[R] Question with RExcel

only do 46 simulations! I’ve already tried to run the program in another computer, but I’ve got the same problem. Do you have any suggestions? Thanks for your attention. Helena Mouriño. __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman

[R] AIC in MuMIn

Hello, I am using package MuMIn to calculate AIC for a full model with 10 explanatory variables. Thanks in advance in sharing your experience. Q1 In the AIC list of all models, each model is differentiated by model number. Please kindly advise if it is possible to find the corresponding explanato

[R] IRT simulation repeated

Hello R: i work on an IRT simulation research. I've written a code to generate a single dataset.As i will repeat simulating the data 100 times under every condition, how can i write the R code to make it run the single simulation code 100 times and save the generate results each time? Than

[R] about IRT simulation

;- rnorm(J, 0.8, 0.04) a b <- rnorm(J, 0, 1) b theta <- rnorm(I, 0,1) theta for( i in 1:I ) { for( j in 1:J ) { ptemp <- runif(1) pij <- exp(a[j]*(theta[i]-b[j]))/(1+exp(a[j]*(theta[i]-b[j]))) response[i,j]<-ifelse(pij(b=b[j], a=a[j], theta[i])

[R] fisher.test - FEXACT error 7

sided") : NAs introduced by coercion In the R mailing I didn’t find the solution for this problem (if there is any solution…). If someone could give me some clues to solve this issue, I would appreciate. Thanks in advanced for your help! Best regards, Hele

[R] Implementation of quasi-bayesian maximum likelihood estimation for normal mixtures

with such a beginner's question and am very helpful for any remarks. I don't have to use the qb-mle so if you think there's a better way to do the estimation tell me. Thanks a lot, Helena formula.pdf Description: Adobe PDF document ___

[R] odd GARCH(1,1) results

ly the same results. I'm very thankful for every answer. Please excuse my bad english. Helena > g2005out<-garch(g2005,order=c(1,1)) * ESTIMATION WITH ANALYTICAL GRADIENT * I INITIAL X(I) D(I) 1 2.214508e-03 1.000e+00 2 5.00e-02 1.000e+00 3 5.00e-02 1.000e+00 IT N