. 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 4.

The average bias (Bias), empirical standard deviation (EmpSD), mean estimated standard deviation (EstSD), and empirical coverage probability (CovP) of 95% confidence intervals at τ = 0.4, based on 500 simulated data sets with 40% missing causes.

Method	Bias×10³			EmpSD×10³			EstSD×10³			CovP×10²
Method	β₀	β₁	β₂	β₀	β₁	β₂	β₀	β₁	β₂	β₀	β₁	β₂
	n = 200
Omni	6	15	8	307	514	308	343	566	338	92.4	93.2	93.6
CC	43	211	395	347	612	432	388	671	492	91.6	90.6	84.4
IPW	−13	57	49	467	840	543	489	866	593	93.8	94.4	93.4
AIPW (Case 1)	22	−4	52	420	766	505	438	786	508	94.6	95.0	93.0
AIPW (Case 2)	15	−4	24	394	667	416	402	676	435	93.0	93.4	92.8
AIPW (Case 3)	−1	11	19	338	539	364	341	594	354	92.0	95.4	91.8

	n = 500
Omni	11	−20	18	199	323	193	196	326	199	91.8	93.0	94.2
CC	53	174	389	212	367	264	227	382	274	91.4	90.8	72.8
IPW	0	14	26	267	494	310	276	494	322	92.2	92.0	93.8
AIPW (Case 1)	3	−4	42	245	443	284	254	450	293	94.4	95.6	93.8
AIPW (Case 2)	11	−21	33	234	410	257	237	413	269	92.6	93.8	95.4
AIPW (Case 3)	8	−19	27	207	352	212	212	355	218	92.2	94.2	95.0