R Dataset / Package COUNT / azcabgptca

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 with the library() command. 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.

azcabgptca

Description

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.

Usage

data(azcabgptca)

Format

A data frame with 1959 observations on the following 6 variables.

died: systolic blood pressure of subject
procedure: 1=CABG; 0=PTCA
gender: 1=male; 0=female
age: age of subject
los: hospital length of stay
type: 1=emerg/urgent; 0=elective

Details

azcabgptca is saved as a data frame.

Source

Hilbe, Negative Binomial Regression, 2nd ed, Cambridge Univ Press

References

Hilbe, Joseph M (2014), Modeling Count Data, Cambridge University Press

Examples

data(azcabgptca); attach(azcabgptca)
table(los); table(procedure, type); table(los, procedure)
summary(los)
summary(c91a <- glm(los ~ procedure+ type, family=poisson, data=azcabgptca))
modelfit(c91a)
summary(c91b <- glm(los ~ procedure+ type, family=quasipoisson, data=azcabgptca))
modelfit(c91b)
library(sandwich)
sqrt(diag(vcovHC(c91a, type="HC0")))

Dataset imported from https://www.r-project.org.

Attachments: csv, json

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