. Author manuscript; available in PMC: 2012 Feb 1.

Published in final edited form as: Acad Radiol. 2011 Feb;18(2):129–142. doi: 10.1016/j.acra.2010.09.007

Table 6.

OR variance component estimates from ten randomly generated Van Dyke [20] data sets having 69 normal and 69 abnormal images. Each data set contains 69 resampled abnormal images combined with the original 69 normal images.

Sample	${\hat{σ}}_{ε}^{2}$	${\hat{Cov}}_{1}$	${\hat{Cov}}_{2}$	${\hat{Cov}}_{3}$
1	0.000512	0.000204	0.000181	0.000125
2	0.000416	0.000019	0.000112	0.000073
3	0.001173	0.000118	0.000169	0.000138
4	0.001121	0.000078	0.000129	0.000074
5	0.000545	0.000153	0.000242	0.000106
6	0.000629	0.000316	0.000224	0.000189
7	0.000634	0.000155	0.000225	0.000107
8	0.001117	0.000135	0.000204	0.000116
9	0.000608	0.000176	0.000222	0.000145
10	0.000470	0.000130	0.000136	0.000089

mean:	0.000723	0.000148	0.000184	0.000116