WilliamsDesign.NIS {TrialSize} | R Documentation |
H0: μ_1-μ_2 ≤ margin
Ha: μ_1-μ_2 > margin
WilliamsDesign.NIS(alpha, beta, sigma, sequence, delta, margin)
alpha |
significance level |
beta |
power = 1-beta |
sigma |
standard deviation in crossover design |
sequence |
total sequence number |
delta |
the superiority or non-inferiority margin |
margin |
margin=μ_1-μ_2 |
Chow SC, Shao J, Wang H. Sample Size Calculation in Clinical Research. New York: Marcel Dekker, 2003
Example.4.5.4<-WilliamsDesign.NIS(0.05,0.2,0.75^2,6,0.2,0.05) Example.4.5.4