critVal {DoseFinding} | R Documentation |

## 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 |

### Author(s)

Bjoern Bornkamp

### See Also

### 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)
```

[Package

*DoseFinding*version 1.1-1 Index]