Vitro.BE {TrialSize} | R Documentation |
Consider 2 by 2 crossover design. ζ = δ^2+sT^2+sR^2-thetaBE*max(σ_0^2,sR^2) . sT^2=σ_{BT}^2+σ_{WT}^2, sR^2=σ_{BR}^2+σ_{WR}^2
Ho: ζ ≥ 0
Ha: ζ < 0
Vitro.BE(alpha, beta, delta, sigmaBT, sigmaBR, sigmaWT, sigmaWR, thetaBE)
alpha |
significance level |
beta |
power = 1-beta |
delta |
delta is the mean difference |
sigmaBT |
σ_{BT}^2 is the between-subjects variance in test formulation |
sigmaBR |
σ_{BR}^2 is the between-subjects variance in reference formulation |
sigmaWT |
σ_{WT}^2 is the within-subjects variance in test formulation |
sigmaWR |
σ_{WR}^2 is the within-subjects variance in reference formulation |
thetaBE |
here thetaBE=1 |
Chow SC, Shao J, Wang H. Sample Size Calculation in Clinical Research. New York: Marcel Dekker, 2003
Example.10.5<-Vitro.BE(0.05,0.2,0,0.5,0.5,0.5,0.5,1) Example.10.5 # n=43 Vitro.BE reach 0