cor.mat | R Documentation |
Calculate the correlation matrix of the z-statistics in the two-period K+M-experimental arm platform design with delayed arms, given K, M, n, n0 and n0t.
cor.mat(K, M = 0, n, n0, n0t = NULL)
K |
the number of experimental arms in the first period in a two-period K+M-experimental arm trial |
M |
the number of new experimental arms added in the beginning of the second period in a two-period K+M-experimental arm trial, default = 0 for calculating the correlation matrix of the Z-test statistics when used for a K-experimental arm trial |
n |
the sample size in each of the experimental arms in a two-period K+M-experimental arm trial |
n0 |
the sample size of the concurrent control for each experimental arm in a two-period K+M-experimental arm trial experimental arms |
n0t |
the number of patients already enrolled in the control arm when new experimental arms are added, default to NULL for calculating correlation matrix of the K-experimental arm trial |
Given K, M, n, n0 and n0t, calculate the correlation matrix of the z-statistics in the two-period K+M experimental arm trial (with one common control arm).
cormat, the correlation matrix of Z-test statistics in the two-period K+M-experimental arm trial with one common control arm, or that in the K-experimental arm trial when M = 0
cor.mat(K = 2, M = 0, n = 101, n0 = 143) #$cormat # [,1] [,2] #[1,] 1.0000000 0.4139344 #[2,] 0.4139344 1.0000000 # #$cor1 #[1] 0.4139344 # #$cor2 #NULL # cor.mat(K = 2, M = 2, n = 107, n0 = 198, n0t = 43) #$cormat # [,1] [,2] [,3] [,4] #[1,] 1.0000000 0.3508197 0.2746316 0.2746316 #[2,] 0.3508197 1.0000000 0.2746316 0.2746316 #[3,] 0.2746316 0.2746316 1.0000000 0.3508197 #[4,] 0.2746316 0.2746316 0.3508197 1.0000000 # #$cor1 #[1] 0.3508197 # #$cor2 #[1] 0.2746316
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