Table 1.

Simulation study results with n = 300; Maximum ASB, Standardized Bias, Standardized Var, and Standardized MSE all multiplied by 100, t^m(Y, X) indicates the MSE-based method that uses outcome information, t^m(X) indicates the MSE-based method that does not use outcome information, t^a(0.20) and t^a(0.10) indicate the ASB-based methods that use a 0.20 and 0.10 threshold, respectively, t^p(0.05) and t^p(0.10) indicate the p-value based methods that use a 0.05 and 0.10 threshold, respectively

	n=300
	Setting (i)	Setting (ii)	Setting (i)	Setting (ii)
Method	# of Trees		Maximum ASB
Unweighted	–	–	70.02	70.01
TWANG	502	494	23.49	23.38
tm(Y, X)	176	446	40.55	23.44
tm(X)	452	445	23.62	23.52
ta(0.20)	461	453	23.97	23.86
ta(0.10)	501	493	23.50	23.39
tp(0.05)	378	369	25.38	25.35
tp(0.10)	445	436	24.17	24.08
	Standardized Bias		Standardized Var
Unweighted	11.56	36.49	1.36	1.46
TWANG	4.27	12.36	1.61	1.62
tm(Y, X)	5.78	12.39	1.60	1.60
tm(X)	4.31	12.46	1.60	1.60
ta(0.20)	4.37	12.62	1.60	1.60
ta(0.10)	4.27	12.36	1.61	1.62
tp(0.05)	4.62	13.42	1.56	1.56
tp(0.10)	4.40	12.74	1.59	1.59
	Standardized MSE		Design Effect
Unweighted	2.69	14.77	1	1
TWANG	1.79	3.14	1.22	1.21
tm(Y, X)	1.93	3.13	1.10	1.21
tm(X)	1.78	3.15	1.21	1.21
ta(0.20)	1.79	3.19	1.21	1.21
ta(0.10)	1.79	3.14	1.22	1.21
tp(0.05)	1.78	3.36	1.19	1.18
tp(0.10)	1.79	3.21	1.20	1.20