Table 3.

The average numbers of patients needed to make the decision of stopping trials early and patient allocation breakdowns in scenario 2 with different values of ϕ = 0.2, 0.5, 0.8.

	ϕ = 0.2			ϕ = 0.5			ϕ = 0.8
# of patients	298.10			299.41			299.15
Subset	1	2	3	1	2	3	1	2	3
$S_1^0$	71.66	19.09	9.06	72.57	18.37	8.88	72.21	18.50	9.11
$S_2^0$	8.64	18.50	73.05	8.63	17.79	73.77	8.79	18.31	73.09