sSize.norm {esDesign}

Sample size calculation for the standard design with continuous endpoint

Description

The sSize.norm() is used to calculate the sample size used in the standard design with continuous endpoint.

Usage

sSize.norm(alpha, beta, theta, side, r, sigma2)

Arguments

alpha

The Type I error rate or the significant level

beta

beta The (1 -Power)

theta

The size of treatment effect

side

One-sided or two-sided Test

r

The ratio of sample size between the experimental and control arms

sigma2

The variance of the treatment effect

Value

A list contains the total sample size, and the sample sizes required for the experimental and control arms.

Examples

alpha <- 0.05
beta <- 0.2
theta <- 0.2
side <- 1
r <- 1
sigma2 <- 0.8
sSize.norm(alpha = alpha, beta = beta, theta = theta,
side = side, r = r, sigma2 = sigma2)