Table 2.

Mean group 2-(1- 6-[(2-[F-18]fluoroethyl) (methyl)amino]-2-naphthyl ethylidene)malononitrile relative distribution volumes (standard deviation values given in parentheses) and comparisons between groups

	Amygd	Midb	HypoTh	Thal	Pons	Str	MTL	LTL	F	p	ACG	PCG	O
Military Personnel	1.30	1.26	1.32	1.37	1.27	1.33	1.14	1.11	1.12	1.08	1.17	1.13	1.03
n = 7	(0.09)	(0.14)	(0.13)	(0.14)	(0.14)	(0.10)	(0.09)	(0.07)	(0.05)	(0.05)	(0.07)	(0.06)	(0.03)
Players	1.39	1.34	1.42	1.51	1.31	1.53	1.18	1.12	1.14	1.09	1.22	1.16	1.00
n = 15	(0.10)	(0.07)	(0.08)	(0.10)	(0.07)	(0.10)	(0.04)	(0.05)	(0.05)	(0.05)	(0.07)	(0.08)	(0.05)
Alzheimer’s disease	1.24	1.15	1.23	1.32	1.16	1.35	1.19	1.16	1.11	1.15	1.14	1.18	1.06
n = 24	(0.06)	(0.06)	(0.06)	(0.11)	(0.06)	(0.09)	(0.02)	(0.02)	(0.03)	(0.03)	(0.07)	(0.02)	(0.06)
Cognitively Intact	1.16	1.14	1.23	1.25	1.15	1.32	1.11	1.06	1.04	1.05	1.09	1.08	1.02
n = 28	(0.04)	(0.05)	(0.05)	(0.09)	(0.08)	(0.07)	(0.02)	(0.03)	(0.03)	(0.03)	(0.04)	(0.04)	(0.05)
Nonparametric ANCOVA*	36.25	26.51	16.42	19.2	20.13	21.35	28	29.34	43.97	23.88	16.54	25.71	4.39
Tukey-Kramer adjusted pairwise Mestp-values
Players versus Military	0.02	0.5	0.1	0.2	0.8	0.003	0.07	0.9	0.8	0.9	0.6	0.9	0.4
Cognitively intact versus Military	0.001	0.0003	0.1	0.01	0.0007	0.5	0.3	0.07	O.0001	0.2	0.004	0.007	0.9
Alzheimer’s disease versus Military	0.9	0.0008	0.1	0.3	0.002	0.5	0.02	0.02	0.7	0.02	0.3	0.4	0.8
Cognitively intact versus Players	<0.0001	<0.0001	<0.0001	<0.0001	<0.0001	<0.0001	<0.0001	<0.0001	<0.0001	0.6	<0.0001	<0.0001	0.5

Amygd, amygdala; Midb, midbrain; HypoTh, hypothalamus; Thal, Thalamus; Str, striatum (caudate nucleus and putamen); MTL, medial temporal lobe; LTL, lateral temporal lobe; F, frontal; P, parietal; PCG, posterior cingulate gyrus; ACG, anterior cingulate gyrus; O, occipital.

^*F(3,69) statistics; all p-values<0.0001 except for O (p = 0.007), controlling for age