On this R-data statistics page, you will find information about the azcabgptca data set which pertains to azcabgptca. The azcabgptca data set is found in the COUNT R package. You can load the azcabgptca data set in R by issuing the following command at the console data("azcabgptca"). This will load the data into a variable called azcabgptca. If R says the azcabgptca data set is not found, you can try installing the package by issuing this command install.packages("COUNT") and then attempt to reload the data. If you need to download R, you can go to the R project website. You can download a CSV (comma separated values) version of the azcabgptca R data set. The size of this file is about 26,093 bytes.
Random subset of the 1991 Arizona Medicare data for patients hospitalized subsequent to undergoing a CABG (DRGs 106, 107) or PTCA (DRG 112) cardiovascular procedure.
A data frame with 1959 observations on the following 6 variables.
systolic blood pressure of subject
age of subject
hospital length of stay
azcabgptca is saved as a data frame.
Hilbe, Negative Binomial Regression, 2nd ed, Cambridge Univ Press
Hilbe, Joseph M (2014), Modeling Count Data, Cambridge University Press
table(los); table(procedure, type); table(los, procedure)
summary(c91a <- glm(los ~ procedure+ type, family=poisson, data=azcabgptca))
summary(c91b <- glm(los ~ procedure+ type, family=quasipoisson, data=azcabgptca))
Dataset imported from https://www.r-project.org.