Table 3 Allocation targets
From: A simulation study for comparing testing statistics in response-adaptive randomization
Optimal allocation ratio (n 1/n 2) for maximizing powers | |
|---|---|
R Risk |
|
R Odds /R Chisq |
|
R Wald /R Neyman |
|
R LLR | {q 2 - p 2 exp[I 1 - I 2/(p 2 - p 1)]}/{-q 1 + p 1 exp[I 1 - I 2/(p 2 - p 1)]} |
Other allocation targets | |
R RPW /R DL | q 2/q 1 |
R RSIHR |
|
(Minimize the number of failure at fixed power of T
Wald
)