Table 1:

Patient characteristics

	Study Sample						Validation Sample
	Age≤73			Age > 73			Age > 73
	CN (n = 13)	aMCI (n = 13)	P^{^a}	CN (n = 12)	aMCI (n = 12)	P^{^a}	CN (n = 13)	aMCI (n = 10)	P^{^a}
Sex
Female	7 (54)	6 (46)	.69	6 (50)	6 (50)	>.99	5 (38)	2 (20)	.34
Male	6 (46)	7 (54)		6 (50)	6 (50)		8 (62)	8 (80)
Age at PET scan
Median (IQR)	68 (66–71)	70 (63–70)	.90	80 (78–82)	78 (77–82)	.66	77 (76–82)	82 (78–84)	.22
Range	57–73	55–72		75–85	74–86		74–90	76–87
Education
Median (IQR)	16 (12–17)	14 (12–17)	.86	12 (12–14)	14.5 (12–18.5)	.20	14 (13–16)	12 (12–16)	.16
Range	10–20	12–20		8–20	8–20		12–19	11–19
MMSE score
Median (IQR)	30 (29–30)	27 (26–28)	.002	29 (27–29)	27 (27–28)	.08	28 (26–28)	27 (26–27)	.17
Range	27–30	25–30		26–30	24–29		24–30	21–28
CDR sum of boxes
Median (IQR)	0 (0–0)	0.5 (0.5–1.5)	<.001	0 (0–0)	1.0 (0.5–2.0)	<.001	0 (0–0.5)	1.3 (1.0–1.9)	<.001
Range	0–0	0.5–2.5		0–0	0.5–3.0		0–0.5	0–3.0

a Wilcoxon rank sum test.