Table 2:

Estimated figure of merit by reader and method^a

	Estimated FOM
	CAD−	CAD+	Difference	95% CI	P Value
Reader 1	0.667	0.726	0.060	(−0.184–0.304)	.62
Reader 2	0.660	0.842	0.182	(0.021–0.344)	.028
Reader 3	0.789	0.892	0.103	(−0.071–0.276)	.24
Reader 4b	0.594	0.746	0.152	(−0.042–0.347)	.12
Reader 5	0.514	0.717	0.203	(−0.158–0.564)	.26
Reader 6	0.707	0.630	-0.077	(−0.371–0.217)	.60
Overall	0.655	0.759	0.104	(0.025–0.183)	.011

^aFor all except reader 6, there was a definite increase in the FOM when CAD results were available, though the difference was statistically significant for only 1 reader (reader 2).

^bGeneral radiologist; all other readers are neuroradiologists.