Table 2.

Group discrimination and relative risk based on PiB- and FDG-PET measures

		Sensitivity	Specificity	Accuracy	P value	Relative Risk	95% C.I.
MH vs NH
Modality	Regions of interest
PiB	LTL	68%	63%	66%	0.01	1.8	1.0-3.5
FDG	PCC	74%	56%	66%	0.04	1.9	1.0-4.0
PiB in LTL + FDG in PCC		74%	63%	69%	0.004	2.6	1.1-4.4
	SPM peaks
PiB	STG	63%	63%	63%	0.03	1.7	0.9-3.4
FDG	PCC	74%	69%	71%	0.01	2.4	1.2-4.8
PiB in STG + FDG in PCC		74%	69%	71%	0.005	2.4	1.2-4.8
MH vs PH
Modality	Regions of interest
PiB	PCC	79%	50%	68%	0.007	1.8	1.0-4.1
FDG	HIP	79%	50%	68%	0.007	1.8	1.0-4.1
PiB in PCC + FDG in HIP		79%	58%	71%	0.001	1.9	1.1-3.5
	SPM peaks
PiB	PCC	84%	50%	71%	0.03	1.7	1.0-2.7
FDG	PFC	95%	67%	84%	0.001	2.8	1.6-3.7
PiB in PCC + FDG in PFC	84%	83%	84%	<0.001	5.1	1.9-16.0
PH vsNH
Modality	Regions of interest
PiB	PCC	58%	75%	68%	0.03	2.1	0.9-4.6
FDG	n.a.
	SPM peaks
PiB	PCC	75%	75%	75%	0.002	3.0	1.3-6.1
FDG	n.a.

Abbreviations: HIP = hippocampus, LTL = lateral temporal lobe, PCC = posterior cingulate cortex, PFC = prefrontal cortex, STG = superior temporal gyrus