Table 1.

The type I error rate for the approximate randomisation test from 5000 replicates of a 2‐arm trial of size T=100 using an FLGI with block size b=20 (J=5) and under the case of scenario 1 depicted in Figure 2 (top‐right plot)

α(s.e.)	p ∗(s.e.)	ΔENS	D
0.0445 (0.21)	0.501 (0.21)	0.19	0
0.0480 (0.21)	0.506 (0.22)	−0.17	0.08
0.0449 (0.20)	0.494 (0.23)	0.02	0.16
0.0445 (0.21)	0.499 (0.24)	0.23	0.24

Abbreviation: FLGI, forward‐looking Gittins index rule.