powerRiskDiffExact {lrstat}R Documentation

Power for Exact Unconditional Test of Risk Difference

Description

Obtains the power given sample size for exact unconditional test of risk difference.

Usage

powerRiskDiffExact(
  n = NA_integer_,
  riskDiffH0 = 0,
  pi1 = NA_real_,
  pi2 = NA_real_,
  allocationRatioPlanned = 1,
  alpha = 0.025,
  calculateAttainedAlpha = 1L
)

Arguments

n

The total sample size.

riskDiffH0

The risk difference under the null hypothesis. Defaults to 0.

pi1

The assumed probability for the active treatment group.

pi2

The assumed probability for the control group.

allocationRatioPlanned

Allocation ratio for the active treatment versus control. Defaults to 1 for equal randomization.

alpha

The one-sided significance level. Defaults to 0.025.

calculateAttainedAlpha

Whether to calculate the attained alpha.

Value

A data frame with the following variables:

Author(s)

Kaifeng Lu, kaifenglu@gmail.com

Examples


powerRiskDiffExact(n = 68, pi1 = 0.6, pi2 = 0.25, alpha = 0.05)


[Package lrstat version 0.2.15 Index]