rheuma {Fahrmeir} | R Documentation |
Data from Patients with Acute Rheumatoid Arthritis
Description
Data from patients with acute rheumathoid arthritis. A new agent was compared with an active control, and each patient was evaluated on a five-point assessment scale.
Usage
data(rheuma)
Format
A data frame with 10 observations on the following 3 variables.
- Drug
a factor with levels
Active.control
New.agent
- Improvement
an ordered factor with levels
Much.worse
<Worse
<No.change
<Improved
<Much.improved
- n
number of patients in group
Details
The global assessment in this example may be subdivided in the coarse response "improvement", "no change" and "worse". On a higher level improvement is split into "much improved" and "improved", while the "worse" category is split into "worse" and "much worse".
Source
Ludwig Fahrmeir, Gerhard Tutz (1994): Multivariate Statistical Modelling Based on Generalized Linear Models. Springer Series in Statistics. Springer Verlag. New-York Berlin Heidelberg
Examples
str(rheuma)
summary(rheuma)