samplesizeRiskDiffExactEquiv {lrstat}R Documentation

Sample Size for Exact Unconditional Test of Equivalence in Risk Difference

Description

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

Usage

samplesizeRiskDiffExactEquiv(
  beta = NA_real_,
  riskDiffLower = NA_real_,
  riskDiffUpper = NA_real_,
  pi1 = NA_real_,
  pi2 = NA_real_,
  allocationRatioPlanned = 1,
  alpha = 0.05
)

Arguments

beta

The type II error.

riskDiffLower

The lower equivalence limit of risk difference.

riskDiffUpper

The upper equivalence limit of risk difference.

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 significance level for each of the two one-sided tests. Defaults to 0.05.

Value

A data frame with the following variables:

Author(s)

Kaifeng Lu, kaifenglu@gmail.com

Examples


samplesizeRiskDiffExactEquiv(
  beta = 0.2, riskDiffLower = -0.3, riskDiffUpper = 0.3,
  pi1 = 0.9, pi2 = 0.9, alpha = 0.05)


[Package lrstat version 0.2.15 Index]