multcomp (version 0.4-8)

angina: Dose Response Data Set

Description

Dose response study of an angina drug; data set taken from Westfall et al. (1999, p. 164). Different trend tests in a balanced one-way layout.

Usage

data(angina)

source

P. H. Westfall, R. D. Tobias, D. Rom, R. D. Wolfinger, Y. Hochberg (1999). Multiple Comparisons and Multiple Tests Using the SAS System. Cary, NC: SAS Institute Inc.

Details

See Westfall et al. (1999, p. 164)

Examples

data(angina)

# perform a dose-response analysis using simultaneous confidence 
# intervals for Williams' contrasts
summary(ci <- simint(response~dose, data=angina, alternative="greater",
               type="Williams"))
plot(ci, cex.axis=1.75, lwd=1.5)

# consider the same data set as a changepoint problem
summary(simint(response~dose, data=angina, alternative="greater",
               type="Changepoint"))

# compute now adjusted p-values for McDermott's test on trend
summary(simtest(response~dose, data=angina, type="McDermott",
                alternative="greater",ttype="logical"))