openintro (version 2.4.0)

stent30: 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. stent30 represents the results 30 days after stroke and stent365 represents the results 365 days after stroke.

Usage

stent30

Arguments

Format

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

group

a factor with levels control and treatment

outcome

a factor with levels no event and stroke

Examples

Run this code

# 30-day results
table(stent30)

# 365-day results
table(stent365)

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