Fig. 3From: Re-formulating Gehan’s design as a flexible two-stage single-arm trialExpected confidence interval length curves, conditional on the number of responses in stage one. Shows the EL(π∣S1=s1) curves, for the five different Gehan designs based on the possible combinations of method (A or B) and function (fG,fL,fEL), when s1∈{1,…,n1}Back to article page