Table 3.

Empirical bias, standard deviation, and coverage probabilities for the proposed approaches to estimation and inference with incomplete covariate and response data with independence working correlation matrix (γ₁ = 2 and α₂ = −2 : missing proportion is about 40%)

	β0			β1			β2
Method	Bias%	SD	CP%	Bias%	SD	CP%	Bias%	SD	CP%
ρ = 0.6
DREE(x+, r+)	2.1	0.138	94.7	0.1	0.133	95.1	−1.0	0.131	94.5
DREE(x+, r−)	1.6	0.146	94.4	1.7	0.134	94.3	−1.4	0.110	94.9
DREE(x−, r+)	−1.4	0.114	94.6	−1.0	0.099	95.0	−0.9	0.094	94.8
DREE(x−, r−)	−9.2	0.108	91.7	−6.9	0.097	92.1	−4.0	0.093	93.5
ρ = 0.3
DREE(x+, r+)	0.9	0.105	94.8	1.0	0.103	95.2	0.1	0.083	95.0
DREE(x+, r−)	−0.4	0.119	94.7	0.1	0.114	94.9	0.1	0.091	95.3
DREE(x−, r+)	−1.5	0.100	94.4	−1.7	0.095	94.4	−0.8	0.085	94.6
DREE(x−, r−)	−7.4	0.096	92.8	−6.0	0.097	93.2	2.0	0.080	94.0
ρ = 0
DREE(x+, r+)	0.5	0.090	95.1	0.1	0.095	95.0	−0.1	0.080	94.6
DREE(x+, r−)	0.2	0.089	95.2	0.4	0.099	94.6	1.0	0.081	94.4
DREE(x−, r+)	1.0	0.087	94.9	0.2	0.096	95.2	0.1	0.078	94.9
DREE(x−, r−)	0.8	0.090	94.5	0.2	0.097	94.7	−0.4	0.080	94.5