Table 2.

One-sided Boundaries for the 5th Analysis z_c(5) When α = 0.025 and K = 5 (The test parameter is assumed to be β₁ for j = 1 − 4, β₂ for j = 5, where j = 1,…, 5, $t_j^{\ast }=j/5$.)

Alpha Spending Function	w
	1	0.8	0.5	0	−0.5	−0.7
O’Brien-Fleming Like Function, α1(t*)	2.03	2.13	2.19	2.23	2.23	2.23
Pocock Like Function, α2(t*)	2.39	2.54	2.64	2.70	2.70	2.70