ulcer {SMPracticals}R Documentation

Recurrent Bleeding from Ulcers

Description

Data from 40 experiments to compare a new surgery for stomach ulcer with an older surgery.

Usage

data(ulcer)

Format

A data frame with 80 observations on the following 9 variables.

author
Author of study from which data taken
year
Year of publication
quality
Assessment of quality of trial on which data based
age
Mean age of patients
r
Number of patients without recurrent bleeding
m
Total number of patients
bleed
a numeric vector
treat
Factor giving control (C) or variants of new treatment
table
Factor giving 2x2 table corresponding to each trial

Source

Efron, B. (1996) Empirical Bayes methods for combining likelihoods (with Discussion). Journal of the American Statistical Association, 91, 538–565.

Errors in the data given in the paper have been corrected here.

References

Davison, A. C. (2003) Statistical Models. Cambridge University Press. Page 496.

Examples

data(ulcer)
glm(cbind(r,m-r)~table+treat,data=ulcer,family=binomial)


[Package SMPracticals version 1.3 Index]