sampSizeCore: Function for sample size calculation

In gMCP: Graph Based Multiple Comparison Procedures

Function for sample size calculation

Description

Function for sample size calculation

Usage

sampSizeCore(
  upperN,
  lowerN = floor(upperN/2),
  targFunc,
  target,
  tol = 0.001,
  alRatio,
  Ntype = c("arm", "total"),
  verbose = FALSE,
  ...
)

Arguments

upperN	targFunc(upperN) should be bigger than target (otherwise upperN is doubled until this is the case).
lowerN	targFunc(lowerN) should be smaller than target (otherwise lowerN is halfed until this is the case).
targFunc	The target (power) function that should be monotonically increasing in n.
target	The target value. The function searches the n with targFunc(n)-target<tol and targFunc(n)>target.
tol	Tolerance: The function searches the n with targFunc(n)-target<tol and targFunc(n)>target.
alRatio	Allocation ratio.
Ntype	Either "arm" or "total".
verbose	Logical, whether verbose output should be printed.
...	...

Details

For details see the manual and examples.

Value

Integer value n (of type numeric) with targFunc(n)-target<tol and targFunc(n)>target.

Author(s)

This function is taken from package DoseFinding under GPL from Bjoern Bornkamp, Jose Pinheiro and Frank Bretz

Examples

f <- function(x){1/100*log(x)}
gMCP:::sampSizeCore(upperN=1000, targFunc=f, target=0.008, verbose=TRUE, alRatio=1)

gMCP documentation built on May 29, 2024, 9:37 a.m.