similar to: Odds Ratio from Logistic Model

Hi, I am new to R. Anyone can explain the following from R-help or anyone can direct me how to calculate odds ratio from logistic model in R. Thank you very much. Guoya Stefano <stecalza at tiscalinet.it <https://stat.ethz.ch/mailman/listinfo/r-help> > writes: >Hi all. > >A simple question. >Is there a function to compute the Odds Ratio and its confidence intervall,

Dear all, I'm working with R 1.2.2 on win98 (256Mb RAM) with ESS 5.1.18. It happens that the start-up is very slow. I don't know exactly how to measure, but with a simple watch I recorded 15 seconds, while the startup of S+ 2000 (Sqpe+4 under ESS) takes around 3 seconds. Tha fact is that sometimes it takes almost a minute (58.30 sec recorded) for the prompt to appear! And ESS gives me an

Hi all. I'm "trying" to install R on a linux box (mandrake 7.1) but when I do make install it stops with the following errors: /usr/bin/install: zero.so: File doesn't exist (translated fron italian!!) make[2]: *** [install-objects] Error 1 make[2]: *** [install] Error 2 make: *** [install] Error 1 Where I'm wrong? The only change I've done is ./configure

Hi all. I'm wondering why there isn't yet the debian version of R 1.2.3. Am I missing something? TIA, Stefano ******************************* Stefano Calza Istituto di Statistica Medica e Biometria Universit? degli Studi di Milano Via G. Venezian, 1 20133 Milano tel. +39 02/2361302, 02/70600908 fax 02/2362930

Dear all, how can I get the R-squared of the sequence of models fitted by step(....,direction="forward")? TIA, Stefano ******************************* Stefano Calza Istituto di Statistica Medica e Biometria Universit? degli Studi di Milano Via G. Venezian, 1 20133 Milano tel. +39 02/2361302, 02/70600908 fax 02/2362930

Hi, is there a function/library like print.display by F.Harrel for R? BTW Harrel clearly states in the reame that "you may not port the library to R" ... Thanks, Stefano. -- *********************************************** Stefano Calza Istituto di Statistica Medica e Biometria Universit? degli Studi di Milano Via G. Venezian, 1 20133 Milano tel. +39 02/2361302, 02/70600908 fax

Hi all. I'm trying to install the packages Rstreams and RPgSQL, but with no success. I did R INSTALL name package but if I try library(Rstreams) I get the following error: Error in library.dynam("Rstreams",pkg,lib): dynamic library 'Rstreams' not found Error in library(Rstreams): .First.lib failed Where did I go wrong? I'm using R 1-1-1 on a Debian GNU/Linux box.

Dear R users, I am trying to fit a Cox model such as: Surv(time,event) ~ X1+X1:X2 or Surv(time,event) ~ X1*X2 -X2, This code is working with coxph but not with cph (nor with psm), and the error message is: Error in if (!length(fname) || !any(fname == zname)) { : missing value where TRUE/FALSE is required Any idea about the cause of the problem and how to manage it within the Design

Hi, Found no measure of association or correlation for 2x2 contingency tables in fullrefman.pdf or google. Can someone point to a package that implements such calculations? Thanx. -- Alexandre Santos Aguiar - consultoria para pesquisa em sa??de - R Botucatu, 591 cj 81 tel 11-9320-2046 fax 11-5549-8760 www.spsconsultoria.com

Full_Name: Marketa Kylouskova Version: 1.2.1 OS: Windows Submission from: (NULL) (147.231.7.2) Hi, I believe there is a bug in the extension of wilcox.test, namely in determination of confidence intervals. I concentrated on the two-sample test only. I examined and tested its performance on this working data set: x<-rnorm(10,3,1) # So I have two samples, I will test whether

hi there tried to use subset with drop=TRUE, but all the 'old' levels are preserved, i.e. when calling e.g. ftable a lot of zeros are displayed >x<-subset(LREG, (kir=='AA' | kir=='BB') & (type=='t1' | otype=='t2'), drop=TRUE, select=c(event, kir, type)) > ftable(x) i explicit have to call factor like

Dear all, is there a automatic method to obtain Odds Ratio estimates and their confidence intervals from a GLM Logistic model? Thanks Cristian ============================================= Cristian Pattaro ============================================= Unit of Epidemiology & Medical Statistics Department of Medicines and Public Health University of Verona cristian@biometria.univr.it

Dear all, I have a four variable: Stuy.Name, OR, 95%LCI and 95%UCI and I would like to create a meta analysis plot. I can't use meta.MH function in metaplot because I do not have n.trt, n.ctrl, col.trt, col.ctrl are not available! Is there an alternative way to do it? Many thanks in advance, Cheba [[alternative HTML version deleted]]

Full_Name: Wei Xu Version: 1.5.1 OS: WindowsME Submission from: (NULL) (63.215.238.92) The P-value for a two.sided test is not consistent with the confidence interval. For example, P-value=0.1372, but the 95% CI doesn't include the H0 value(1). > x [1] 0.80 0.83 1.89 1.04 1.45 1.38 1.91 1.64 0.73 1.46 > y [1] 1.15 0.88 0.90 0.74 1.21 >

Muchísimas gracias Carlos, de verdad que te agradezco la ayuda, pero no es lo que voy buscando. Quiero colocar en el eje de abscisas la secuencia temporal de los meses, es decir, agosto septiembre, octubre, etc? pero no las fechas de las toma de datos, sino que aparezca la marca de un mes, y la siguiente marca sea la del siguiente mes, etc?, y además que las muestras estén separadas de acuerdo con

Hello everybody, I'm writting some functions for experimental designs. The one I'm working on is similar to "fac.design" on Splus. The problem I have is with the form of the output : When the argument fraction is submitted, Splus gives something like : A B C 1 - - - 2 + + - 3 + - + 4 - + + Fraction : ~A:B:C The first part of this output is the

Muchas gracias Carlos, previo a mi correo, entre las pruebas que hice estaba una parecida a la que apuntas de la siguiente manera: attach (Libro1) plot (xbar~as.Date(fechas,"%d/%m/%y"), ylim=c(400,660), xaxt="n", type="b", pch=19,cex=1) xlabels<-strptime(fecha,format="%d/%m/%Y") axis.Date (1,at=xlabels,format="%b-%y")

Hola de nuevo, acabo de encontrar la solución. He creado una variable ficticia con los días 1 de cada mes en la secuencia temporal que quería y después he actuado de la siguiente manera attach(Libro1) plot (xbar~as.Date(fecha,"%d/%m/%y"), type="b", pch=19,cex=2,xaxt="n") xlabels<-strptime(ofeje, format = "%d/%m/%y") axis.Date(1,

Hi all. I'm trying to see how the package Rodbc works, with R 1.2.2, win98 and MySql 3.23. I'd like to export a dataset with 524 variables and 3440 records form R to MySql. I issued the following commands: library(RODBC) channel <- odbcConnect("test") sqlSave(channel,dat=totale) Error in sqlTables(channel)[, 3] : incorrect number of dimensions Actually it gave me other

Estimada Comunidad, solicito vuestra ayuda en un tema quizás un poco tonto, pero no logro dar con la tecla. Estoy intentando hacer una gráfica de la evolución temporal de una variable (xbar) a lo largo del tiempo. La secuencia que he hecho es la siguiente: attach(Libro1) plot (xbar~as.Date(fechas,"%d/%m/%y"), ylim=c(400,650), type="b", pch=19,cex=1)