search for: pneumo

...of the VGAM library to perform proportional odds ordinal logistic regression. The issue that I would like help with concerns the format in which the response variable must be provided for this function to work correctly. Consider the following example: ------ library(VGAM) library(MASS) attach(pneumo) pneumo # Inspect the format of the original dataset # Restructure the pneumo dataset into a different format pneumo2 <- data.frame(matrix(ncol=3, nrow=24)) colnames(pneumo2) <- c('exposure.time', 'severity', 'freq') pneumo2[,1] <- rep(pneumo[,1],3) pneumo2[,2] &l...

Dear Prof. Thomas Yee I$B!G(Bm very interested in your R program VGAM. I tried below your data: # Nonparametric proportional odds model data(pneumo)pneumo = transform(pneumo, let=log(exposure.time))vgam(cbind(normal,mild,severe) ~ s(let), cumulative(par=TRUE), pneumo) However, the results by Version of VGAM are different; ----------The result by Version 0.7-7 ----------------------------- Call: vgam(formula = cbind(V1, V2, V3) ~ s(V4), f...

...2121 05-05-03 15:32 faraway/data/melanoma.rda 1901 05-05-03 15:32 faraway/data/odor.rda 42169 05-05-03 15:32 faraway/data/ozone.rda 2677 05-05-03 15:32 faraway/data/penicillin.rda 42496 05-05-03 15:32 faraway/data/pima.rda 2577 05-05-03 15:32 faraway/data/pneumo.rda 3557 05-05-03 15:32 faraway/data/rabbit.rda 4237 05-05-03 15:32 faraway/data/rats.rda 5317 05-05-03 15:32 faraway/data/savings.rda 71017 05-05-03 15:32 faraway/data/solder.rda 7737 05-05-03 15:32 faraway/data/speedo.rda 3885 05-05-03 15:32 faraway/...

Thanks for helping me out with the thing of quotation marks. I finally could save time running programs at the university and home. One additional question for all of you. I'm starting to be familiar with multinomial regression models. Actually I'm doing some exercise with the pneumo data that appears in Faraway library. The database has 24 observations and I want to study the probability of getting sick according with the number of years working at a coal mine. Here is the issue. For modelling that response what I need to include in the model is something similar at what is pr...