ulcer: Recurrent Bleeding from Ulcers

In SMPracticals: Practicals for Use with Davison (2003) Statistical Models

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)

SMPracticals documentation built on May 2, 2019, 11:12 a.m.