From: Adaptive designs based on the truncated product method
Number of stages (k)
c α
for Ď„ = 0.5
α = 0.025
2
0.00380
0.00408
3
0.00072
0.00085
4
0.00015
0.00020
α = 0.05
0.00870
0.00948
0.00184
0.00222
0.00042
0.00057