Table 2.

Simulation results: probability of rejecting the null hypothesis that the treatment benefit across subgroups is equivalent by the HTB test.

Setting 1. Four region means = (1, 0.5, −1, −0.5).
	W	X1	V	U1
N = 800
PM	0.16	0.05	0.03	0.02
Q-learning	0.18	0.06	0.03	0.03
O-learning	0.21	0.05	0.03	0.03
ABLO	0.42	0.07	0.05	0.06
N = 1600
PM	0.52	0.05	0.05	0.02
Q-learning	0.61	0.05	0.04	0.02
O-learning	0.71	0.04	0.04	0.02
ABLO	0.84	0.05	0.05	0.03
Setting 2. Four region means = (1, 0.3, −1, −0.3).
N = 800
PM	0.12	0.03	0.02	0.02
Q-learning	0.17	0.04	0.03	0.04
O-learning	0.15	0.03	0.03	0.03
ABLO	0.34	0.06	0.04	0.05
N = 1600
PM	0.42	0.06	0.04	0.03
Q-learning	0.56	0.07	0.04	0.03
O-learning	0.57	0.07	0.03	0.03
ABLO	0.74	0.10	0.04	0.05

^*W has strong signal; X¹ has weak signal; V and U¹ have no signal.