Table 1:

Patient Demographics

	HC-Aβ (n=15)	LBD Total (n=20)	LBD-Aβ (n=9)	LBD+Aβ (n=11)	AD+Aβ (n=12)
Clinical Phenotype, count	NA	DLB: 15 PD-MCI: 4 PDD: 1	DLB: 6 PD-MCI: 3	DLB: 9 PD-MCI: 1 PDD: 1	Dementia: 7 MCI: 5
Sex^*, count	Male: 8 Female: 7	Male: 17 Female: 3	Male: 7 Female: 2	Male: 10 Female: 1	Male: 3 Female: 9
Race, count	White: 13 Black: 2	White: 20	White: 9	White:11	White:12
Age of Onset	NA	62.8 (6.2)	61.7 (6.4)	63.6 (6.3)	62.0 (9.2)
Disease duration at scan^a	NA	5.4 (3.5)	6.2 (3.0)	3.9 (2.9)	9 (4.9)
Age at scan	72.7 (6.0)	67.7 (5.6)	67.9 (6.6)	67.5 (4.9)	71.4 (5.9)
Education^#	14.5 (3.1)	15.7 (2.5)	17.3 (1.7)	14.3 (2.3)	15.9 (3.0)
MMSE^b^†	29.3 (0.9)	27.0 (2.7)	28.4 (1.1)	25.8 (3.1)	24.3 (5.6)
CDR-Sum of Boxes^‡	0 (0)	N=15 4.87 (2.8)	N=7 3.64 (1.5)	N=8 5.94 (3.4)	4.25 (3.1)

Data shown is mean (SD) from the entirety of the group unless otherwise specified.

NA: not applicable. There were no significant differences in age at scan, MMSE, or CDR-Sum of boxes between the AD+Aβ group and the LBD total cohort.

^*:

Fisher exact Chi2 p=0.005.

^#:

ANOVA F(3,43)=3.0, p=0.04.

^†

ANOVA F(3,43)=6.1, p=0.002.

^‡

ANOVA F(3,37)=10.7, p<0.001

^a:

time from MCI onset used for AD+Aβ.

^b:

MMSE closest to PET scan was assessed. If a MoCA was performed closer to PET scan, MoCA score was converted to equivalent MMSE score