| MSPatients | R Documentation |
Data from Westlund & Kurland (1953) on the diagnosis of multiple sclerosis (MS): two samples of patients, one from Winnipeg and one from New Orleans, were each rated by two neurologists (one from each city) in four diagnostic categories.
data("MSPatients")
A 3-dimensional array resulting from cross-tabulating 218 observations on 3 variables. The variables and their levels are as follows:
| No | Name | Levels |
| 1 | New Orleans Neurologist | Certain, Probable, Possible, Doubtful |
| 2 | Winnipeg Neurologist | Certain, Probable, Possible, Doubtful |
| 3 | Patients | Winnipeg, New Orleans |
M. Friendly (2000), Visualizing Categorical Data: http://euclid.psych.yorku.ca/ftp/sas/vcd/catdata/msdiag.sas
K. B. Westlund & L. T. Kurland (1953), Studies on multiple sclerosis in Winnipeg, Manitoba and New Orleans, Louisiana, American Journal of Hygiene, 57, 380–396.
M. Friendly (2000), Visualizing Categorical Data. SAS Institute, Cary, NC.
data("MSPatients")
## Not run:
## best visualized using a resized device, e.g. using:
## get(getOption("device"))(width = 12)
pushViewport(viewport(layout = grid.layout(ncol = 2)))
pushViewport(viewport(layout.pos.col = 1))
popViewport()
pushViewport(viewport(layout.pos.col = 2))
popViewport(2)
dev.off()
## End(Not run)
## alternative, more convenient way
mplot(
agreementplot(t(MSPatients[,,1]), return_grob = TRUE,
main = "Winnipeg Patients"),
agreementplot(t(MSPatients[,,2]), return_grob = TRUE,
main = "New Orleans Patients")
)
## alternatively, use cotabplot:
cotabplot(MSPatients, panel = cotab_agreementplot)