		N	JAFROC		Location sensitivity		Specificity
Mammograms read per year			Mean	p-value	Mean	p-value	Mean	p-value
	<500	14	0.489	0.037	0.459	0.420	0.757	0.973
	>500	13	0.571	0.037	0.523	0.420	0.759	0.973