Power using mean squared error (MSE) of previous 2x2 study

It calculates power for the bioequivalence test on ratio using mean squared error (MSE of previous 2x2 study.

pow2x2mse(n1, n2, mse, True.R = 1, Alpha = 0.1, ThetaL = 0.8, ThetaU = 1.25)

Arguments

n1

Subject count of group 1

n2

Subject count of group 2

mse

Mean squared error

True.R

True ratio of test/reference

Alpha

Alpha level. This means (1 - alpha/2)*100 % confidence interval is given

ThetaL

Lower limit of equivalence criteria

ThetaU

Upper limit of equivalence criteria

Details

It calculates power of sample size (n per group) with CV.

Value

Returns power [0, 1)

Author

Kyun-Seop Bae <k@acr.kr>

Examples

pow2x2mse(12, 13, 0.0756530) 
#> [1] 0.7437345