Table 2.

Full model for storage period and amyloid PET status for plasma MDS-OAβ

	β (se)b	p-value
Storage period, yrs	.03 (.01)	.02
Amyloid PET statusa	.38 (.08)	< .001
Amyloid PET status × storage period, yrs	− .04 (.01)	.003

We used general linear models (GLM) with factors storage period and PET amyloid status, and their 2-way interactions

^aReference is normal amyloid PET status. p < 0.05 is considered significant

^bPlasma MDS-OAβ was normalized using two-step transformation

MDS-OAβ Aβ oligomeric tendency, yrs years, PET positron emission tomography