computeBetaSafeT {safestats}

Helper function: Computes the type II error of the safeTTest based on the minimal clinically relevant standardised mean difference and nPlan.

Description

Helper function: Computes the type II error of the safeTTest based on the minimal clinically relevant standardised mean difference and nPlan.

Usage

computeBetaSafeT(
  deltaMin,
  nPlan,
  alpha = 0.05,
  alternative = c("twoSided", "greater", "less"),
  testType = c("oneSample", "paired", "twoSample"),
  seed = NULL,
  parameter = NULL,
  pb = TRUE,
  nSim = 1000L,
  nBoot = 1000L
)

Arguments

deltaMin

numeric that defines the minimal relevant standardised effect size, the smallest effect size that we would the experiment to be able to detect.

nPlan

vector of max length 2 representing the planned sample sizes.

alpha

numeric in (0, 1) that specifies the tolerable type I error control –independent of n– that the designed test has to adhere to. Note that it also defines the rejection rule e10 > 1/alpha.

alternative

a character string specifying the alternative hypothesis must be one of "twoSided" (default), "greater" or "less".

testType

either one of "oneSample", "paired", "twoSample".

seed

integer, seed number.

parameter

optional test defining parameter. Default set to NULL.

pb

logical, if TRUE, then show progress bar.

nSim

integer > 0, the number of simulations needed to compute power or the number of samples paths for the safe z test under continuous monitoring.

nBoot

integer > 0 representing the number of bootstrap samples to assess the accuracy of approximation of the power, the number of samples for the safe z test under continuous monitoring, or for the computation of the logarithm of the implied target.

Value

a list which contains at least beta and an adapted bootObject of class boot.

Examples

computeBetaSafeT(deltaMin=0.7, 27, nSim=10)