Fig. 2. Association between global Aβ deposition and HVa in lower (serum 25[OH]D < 16.09 ng/ml) and upper (serum 25[OH]D > 24.30 ng/ml) tertile groups of serum 25(OH)D levels, respectively.
Predicted HVa, corresponding to an individual’s global Aβ deposition after adjustment for covariates including age, sex, APOE4 carrier status, and vascular risk factor score, is presented. Blue/red dots indicate individuals in the lower (1st) and upper (3rd) tertile group of serum 25(OH)D level, respectively. Solid lines represent the regression lines. Gray dashed line demonstrates the regression line for whole participants.
25(OH)D, 25-hydroxyvitamin D; Aβ, beta-amyloid; HVa, adjusted hippocampal volume; APOE4, apolipoprotein ɛ4; SUVR, standardized uptake value ratio.
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