openintro (version 1.7.1)

stent365: Stents for the treatment of stroke

Description

An experiment that studies effectiveness of stents in treating patients at risk of stroke with some unexpected results. These data represent the results 365 days after stroke.

Usage

data("stent365")

Format

A data frame with 451 observations on the following 2 variables.

group

a factor with levels control treatment

outcome

a factor with levels no event stroke

Examples

# NOT RUN {
data(stent365)
## maybe str(stent365) ; plot(stent365) ...
# }