TABLE 4.

FWER, maximum sample sizes (Max. SS), expected sample sizes (ESS), and critical bounds under $\mathit{\theta }=(0,0)$ for the 3‐arm 2‐stage ORD, 3‐arm 1‐stage ORD (FSD(h)), FSD, and MAMS(m) designs when all designs are powered at 80% to reject both hypotheses under $\mathit{\theta }=(0.5,0.5)$

Design	$u_1,u_2,l_1$	Max. SS	ESS	Reject at least one $H_{0k}$
FSD	1.917, ‐, 1.917	231	231.0	0.05
FSD(h)	1.644, ‐, 1.644	192	192.0	0.05
ORD	1.898, 1.789, 0.633	222	134.4	0.05
MAMS(m)	2.179, 2.055, 0.726	264	166.6	0.05

Note: 3‐arm 2‐stage ORD and MAMS(m) use triangular bounds. Results are provided using $10^6$ replications.