search for: lesaffre

Dear R-users, Half a year ago we put out the R package "glmmADMB" for fitting overdispersed count data. http://otter-rsch.com/admbre/examples/glmmadmb/glmmADMB.html Several people who used this package have requested additional features. We now have a new version ready. The major new feature is that glmmADMB allows Bernoulli responses with logistic and probit links. In addition there

Do Users of Nonlinear Mixed Effects Models Know Whether Their Software Really Works? Lesaffre et. al. (Appl. Statist. (2001) 50, Part3, pp 325-335) analyzed some simple clinical trials data using a logistic random effects model. Several packages and methods MIXOR, SAS NLMIXED were employed. They reported obtaining very different parameter estimates and P values for the log-li...

the code is list below , i can run this code for laplace approximation but not importance sampling. the code work properly if use impSamp=0 , but error for any other number >0 . could you guys help me out. thanks so much ! source("http://www.mi.uib.no/~skaug/cash/lesaffre_dat.s") library(glmmADMB) fit_glmmADMB_ip <- glmm.admb(y~treat,random=~1,group="subject",impSamp =100,data=lesaffre,family="binomial",link="logit",save.dir= NULL) Initial statistics: 2 variables; iteration 0; function evaluation 0 Function value 1.5926934...

...DMB_temp_dir_ when programing is running , but this fold mysteriously disappeared after the programing done . searched the whole computer desn't find any clue. I posted my output below. I really appreciate if you can help me with the questions. source("http://www.mi.uib.no/~skaug/cash/lesaffre_dat.s <http://www.mi.uib.no/%7Eskaug/cash/lesaffre_dat.s>") fit_glmmADMB_ip <- glmm.admb(y~treat,random=~1,group="subject",impSamp =100,data=lesaffre,family="binomial",link="logit",save.dir= NULL) Initial statistics: 2 variables; iteration 0; function...

I am hoping that some one might be to tell me whether there are any functions that produce influence measures for lme /nlme objects (i.e those suggested by Lesaffre and Verbeke or Langford and Lewis for multilevel models). Thanks in advance. ----------------------------------------------- Anthony A. Pezzola apezzola@uc.cl (02) 354-7823 Profesor de Ciencia Política Instituto de Ciencia Política Pontificia Universidad Católica de Chile Santiago de Chil...

Dear Sirs, Could you please be so kind as to send us some information on residuals in multinomial logistic models? Is it possible to use R software? We thank you in advance. Sincerely yours Luciana Alves,MSc Beatriz Leimann, MD -- Luciana Correia Alves Doutoranda em Sa??de P??blica ENSP - Fiocruz