A Computer-Aided Detection System for Digital Chest Radiographs

Table 2

Results of the hypothesis testing on the GDAV, DV, and CV classifiers, without and with discrimination matrix, and using male, female, and all radiographs. is the sample size, and df means degrees of freedom.

	Without discr. matrix			With discr. matrix
	Male	Female	All	Male	Female	All
	25	23	48	25	23	48
Cochran’s	1.14	0.75	2.05	0.46	2.57	5.28
df	2	2	2	2	2	2
Asymptotic significance	0.56	0.68	0.35	0.79	0.27	0.07