powerRiskRatioExactEquiv {lrstat} | R Documentation |
Power for exact unconditional test of equivalence in risk ratio
Description
Obtains the power given sample size for exact unconditional test of equivalence in risk ratio.
Usage
powerRiskRatioExactEquiv(
n = NA_integer_,
riskRatioLower = NA_real_,
riskRatioUpper = NA_real_,
pi1 = NA_real_,
pi2 = NA_real_,
allocationRatioPlanned = 1,
alpha = 0.05,
calculateAttainedAlpha = 1L
)
Arguments
n |
The total sample size. |
riskRatioLower |
The lower equivalence limit of risk ratio. |
riskRatioUpper |
The upper equivalence limit of risk ratio. |
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. |
calculateAttainedAlpha |
Whether to calculate the attained alpha. |
Value
A data frame with the following variables:
-
alpha
: The specified significance level for each of the two one-sided tests. -
attainedAlphaH10
: The attained significance level under H10 if requested. -
attainedAlphaH20
: The attained significance level under H20 if requested. -
power
: The power. -
n
: The sample size. -
riskRatioLower
: The lower equivalence limit of risk ratio. -
riskRatioUpper
: The upper equivalence limit of risk ratio. -
pi1
: The assumed probability for the active treatment group. -
pi2
: The assumed probability for the control group. -
riskRatio
: The risk ratio. -
allocationRatioPlanned
: Allocation ratio for the active treatment versus control. -
zstatRiskRatioLower
: The efficacy boundaries on the z-test statistic scale for the one-sided null hypothesis on the lower equivalence limit. -
zstatRiskRatioUpper
: The efficacy boundaries on the z-test statistic scale for the one-sided null hypothesis on the upper equivalence limit.
Author(s)
Kaifeng Lu, kaifenglu@gmail.com
Examples
powerRiskRatioExactEquiv(
n = 200, riskRatioLower = 0.8, riskRatioUpper = 1.25,
pi1 = 0.775, pi2 = 0.775, alpha = 0.05)