. 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 3.

The average bias (Bias), empirical standard deviation (EmpSD), mean estimated standard deviation (EstSD), and empirical coverage probability (CovP) of 95% confidence intervals at τ = 0.2, 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	5	−24	10	274	438	245	304	486	277	92.4	92.0	92.6
CC	42	226	346	316	551	360	362	606	370	92.2	91.0	79.0
IPW	−51	45	66	430	768	436	450	779	425	89.6	91.0	89.2
AIPW (Case 1)	2	−18	35	363	628	371	381	632	363	91.2	92.4	90.8
AIPW (Case 2)	2	−16	32	338	575	330	343	548	328	91.0	90.8	93.0
AIPW (Case 3)	3	−16	12	286	477	265	309	502	293	91.8	92.8	93.4

	n = 500
Omni	7	−7	2	173	278	156	170	293	166	91.8	93.4	93.6
CC	46	239	325	204	348	212	209	357	221	90.8	86.6	69.4
IPW	1	7	9	256	467	257	266	473	263	93.4	92.4	91.0
AIPW (Case 1)	−1	0	19	221	399	224	222	388	222	92.8	91.2	92.2
AIPW (Case 2)	6	−13	10	207	365	202	213	354	204	92.2	93.4	91.0
AIPW (Case 3)	5	−5	10	176	294	169	187	303	173	92.6	94.0	92.6