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Baseline CVRi × amyloid effects on time taken to complete Trails B. In amyloid-positive cases, higher baseline CVRi predicted poorer and larger declines in Trails B time at later time points. Aβ+ = non-demented amyloid-positive; Aβ− = amyloid-negative; Trails B = Trail Making Test Part B. Error bars represent±1 SE. Analyses were performed using continuous CVRi variables. Median splits (yielding high and low CVRi groupings) are provided here for visual comparison.
