. Author manuscript; available in PMC: 2014 Mar 1.

Published in final edited form as: Biometrics. 2013 Feb 14;69(1):91–100. doi: 10.1111/biom.12001

Table 2.

The bias (in percentage of the true value), average standard error (SE), empirical standard deviation (SD) for θ*, AUC_x and AAUC estimators under NMAR verification process.

θ_{0}^{*} = 0.277

θ_{1}^{*} = 0.693

θ_{2}^{*} = 0.347

Estimator

Bias (%)

SE×100

SD×100

Coverage (%)

Bias (%)

SE×100

SD×100

Coverage (%)

Bias (%)

SE×100

SD×100

Coverage (%)

−144.0

6.99

7.24

0.0

17.6

9.04

9.31

72.1

8.35

8.54

15.3

FI₁

−5.9

8.94

8.96

92.8

1.8

8.98

9.13

94.4

4.2

8.69

8.88

93.9

MSI₁

−6.2

8.98

8.96

93.1

1.6

9.10

9.18

94.7

3.6

8.79

8.97

93.6

IPW₁

−2.7

10.11

10.21

93.6

−0.2

11.61

12.01

93.9

−0.0

11.13

11.39

93.9

	AUC_(0,0) = 0.6092				AUC_{(1, 0.5)} = 0.8737				AAUC = 0.7582

Estimator	Bias (%)	SE×100	SD×100	Coverage (%)	Bias (%)	SE×100	SD×100	Coverage (%)	Bias (%)	SE×100	SD×100	Coverage (%)
CC	−25.9	2.76	2.86	0.0	−4.0	1.64	1.71	38.8	−10.0	1.59	1.65	0.5
FI₁	−1.1	3.44	3.46	92.8	0.0	1.26	1.31	94.6	−1.2	2.85	2.87	91.8
MSI₁	−1.2	3.46	3.56	93.1	−0.1	1.29	1.34	94.3	−1.2	2.67	2.86	91.4
IPW₁	−0.6	3.88	3.93	93.6	−0.3	1.60	1.68	94.1	−1.2	2.86	2.94	92.0