. Author manuscript; available in PMC: 2013 Aug 13.

Published in final edited form as: Stat Sin. 2012 Apr 1;22(2):703–728. doi: 10.5705/ss.2010.093

Table 5.

Pitman relative efficiencies of the IPW and AIPW estimators with respect to the Omni estimator based on 500 simulated data sets. The maximum standard error of the relative efficiencies is 0.07. MP stands for the missingness proportion of failure causes.

n	IPW			AIPW(Case 1)			AIPW(Case 2)			AIPW(Case 3)
n	β₀	β₁	β₂	β₀	β₁	β₂	β₀	β₁	β₂	β₀	β₁	β₂
	MP=20%, τ = 0.2

200	0.66	0.58	0.64	0.75	0.68	0.76	0.85	0.78	0.83	0.93	0.90	0.99
500	0.78	0.68	0.66	0.85	0.79	0.74	0.91	0.84	0.84	0.95	0.95	0.93

	MP=20%, τ = 0.4
200	0.74	0.67	0.75	0.81	0.74	0.76	0.86	0.81	0.78	0.95	0.93	0.92
500	0.83	0.79	0.79	0.87	0.84	0.76	0.91	0.88	0.86	0.94	0.93	0.96

	MP=40%, τ = 0.2
200	0.41	0.33	0.32	0.57	0.49	0.44	0.65	0.58	0.55	0.92	0.84	0.85
500	0.46	0.36	0.37	0.62	0.49	0.49	0.70	0.58	0.60	0.97	0.90	0.85

	MP=40%, τ = 0.4
200	0.43	0.37	0.32	0.53	0.45	0.37	0.61	0.59	0.55	0.83	0.91	0.72
500	0.56	0.43	0.39	0.66	0.53	0.46	0.72	0.62	0.56	0.92	0.84	0.82