knee {glmmLasso} | R Documentation |
Clinical pain study on knee data
Description
The knee
data set illustrates the effect of a medical spray on the pressure pain in the knee due to sports injuries.
Usage
data(knee)
Format
A data frame with 381 patients, each with three replicates, and the following 7 variables:
pain
the magnitude of pressure pain in the knee given in 5 categories (1: lowest pain; 5: strongest pain).
time
the number of replication
id
number of patient
th
the therapy (1: spray; 0: placebo)
age
age of the patient in years
sex
sex of the patient (1: male; 0: female)
pain.start
the magnitude of pressure pain in the knee at the beginning of the study
References
Tutz, G. (2000). Die Analyse kategorialer Daten - eine anwendungsorientierte Einfuehrung in Logit-Modellierung und kategoriale Regression. Muenchen: Oldenbourg Verlag.
Tutz, G. and A. Groll (2012). Likelihood-based boosting in binary and ordinal random effects models. Journal of Computational and Graphical Statistics, 22(2): 356-378