get_combo_power: Function to calculate power

In gsDesign2: Group Sequential Design with Non-Constant Effect

Function to calculate power

Description

A helper function passed to uniroot()

Usage

get_combo_power(n, bound, info_fh, theta_fh, corr_fh, algorithm, beta, ...)

Arguments

n	Input sample size
algorithm	an object of class GenzBretz, Miwa or TVPACK specifying both the algorithm to be used as well as the associated hyper parameters.
beta	Type II error.
...	Additional parameters passed to mvtnorm::pmvnorm.

Details

This function calculates the difference between the derived power and the targeted power (1 - beta), based on the provided sample size, upper and lower boundaries, and treatment effect.

Value

The optimal sample size (a single numeric value)

gsDesign2 documentation built on April 3, 2025, 9:39 p.m.