How does changing the allocation ratio affect the required sample size in a medical trial?

MathewG

New member
Joined
Jan 26, 2021
Messages
5
In a 1:1 ratio where the standard deviation is 10, tau = 5, with a significance level of 5% and a power of 80%
1622629561277.png
How would this differ if the ratio was 2:1 or 3:1 where the larger group was the placebo?
 
Top