The knee.saemix data represents pain scores recorded in a clinical study
in 127 patients with sport related injuries treated with two different therapies.
After 3,7 and 10 days of treatment the pain occuring during knee movement was observed.
knee.saemixThis data frame contains the following columns:
subject index in file
time of measurement (in days)
knee pain (0=none to 4=severe)
patient age (scaled and centered)
patient gender (0=male, 1=female)
moderate knee pain (defined as pain score 2 or more)
treatment indicator (0=placebo, 1=treatment)
patient age, squared (Age^2)
#'
The data in the knee.saemix was reformatted from the knee dataset provided by the
catdata package (see data(knee, package="catdata")). A time column was added representing the day
of the measurement (with 0 being the baseline value) and each observation corresponds to a different
line in the dataset. Treatment was recoded as 0/1 (placebo/treatment), gender as 0/1 (male/female)
and Age2 represents the squared of centered Age.
Please refer to the PDF documentation (chapter 4, section 4.6) for more details on the analysis, including examples of diagnostic plots.
G Tutz (2012), Regression for Categorical Data, Cambridge University Press.
#' @examples data(knee.saemix)
#' @keywords datasets