critVal: Calculate critical value for multiple contrast test

In DoseFinding: Planning and Analyzing Dose Finding Experiments

Calculate critical value for multiple contrast test

Description

Calculation of the critical value for a maximum contrast test. This is based on the equicoordinate quantile function of the multivariate normal or t distribution as implemented in the qmvt function from the mvtnorm package.

Usage

critVal(
  corMat,
  alpha = 0.025,
  df = NULL,
  alternative = c("one.sided", "two.sided"),
  control = mvtnorm.control()
)

Arguments

corMat	Correlation matrix of contrasts
alpha	Significance level for the multiple contrast test
df	Specify the degrees of freedom to use, if this argument is missing ‘⁠df = Inf⁠’ is used (which corresponds to the multivariate normal distribution).
alternative	Character determining the alternative for the multiple contrast trend test.
control	A list specifying additional control parameters for the ‘⁠qmvt⁠’ and ‘⁠pmvt⁠’ calls in the code, see also mvtnorm.control for details.

Author(s)

Bjoern Bornkamp

See Also

powMCT, optContr, MCTtest

Examples

R <- matrix(c(1,0.5,0.5,1), nrow=2)
critVal(R, alpha = 0.05, df = 1)
critVal(R, alpha = 0.05, df = 20)
critVal(R, alpha = 0.05, df = Inf)

DoseFinding documentation built on Sept. 11, 2024, 9:04 p.m.