Table 1.

Group size and power of designs 1-3 at different power scenarios. Design 1 has sample size chosen so that power at the LFC with δ₁ = 0.545 and δ₀ = 0.178 is 0.9; design 2 has sample size chosen so that power at the LFC with δ₁ = 0.545 and δ₀ = 0 is 0.9; design 3 has sample size chosen so that power to recommend any treatment when all have effect δ = 0.545

	Design 1	Design 2	Design 3
Required group size	36	32	17
ℙ (Recommend treatment 1) when δ1 = 0.545, δ0 = 0.178	0.904	0.872	0.605
ℙ (Recommend treatment 1) when δ1 = 0.545, δ0 = 0	0.938	0.908	0.643
ℙ (Recommend any treatment) when δ = (0.545,…, 0.545)	0.996	0.992	0.905