Shahram Oveisgharan1,2, Lei Yu1,2, Ana Capuano1,2, Zoe Arvanitakis1,2, Lisa L Barnes1,2,3, Julie A Schneider1,2,4, David A Bennett1,2, Aron S Buchman1,2. 1. Rush Alzheimer's Disease Center (S.O., L.Y., A.C., Z.A., L.L.B., J.A.S., D.A.B., A.S.B.), Rush University Medical Center, Chicago, IL. 2. Department of Neurological Sciences (S.O., L.Y., A.C., Z.A., L.L.B., J.A.S., D.A.B., A.S.B.), Rush University Medical Center, Chicago, IL. 3. Department of Behavioral Sciences (L.L.B.), Rush University Medical Center, Chicago, IL. 4. Department of Pathology (J.A.S.), Rush University Medical Center, Chicago, IL.
Abstract
BACKGROUND AND PURPOSE: The general cardiovascular Framingham risk score (FRS) identifies adults at increased risk for stroke. We tested the hypothesis that baseline FRS is associated with the presence of postmortem cerebrovascular disease (CVD) pathologies. METHODS: We studied the brains of 1672 older decedents with baseline FRS and measured CVD pathologies including macroinfarcts, microinfarcts, atherosclerosis, arteriolosclerosis, and cerebral amyloid angiopathy. We employed a series of logistic regressions to examine the association of baseline FRS with each of the 5 CVD pathologies. RESULTS: Average age at baseline was 80.5±7.0 years and average age at death was 89.2±6.7 years. A higher baseline FRS was associated with higher odds of macroinfarcts (odds ratio, 1.10 [95% CI, 1.07-1.13], P<0.001), microinfarcts (odds ratio, 1.04 [95% CI, 1.01-1.07], P=0.009), atherosclerosis (odds ratio, 1.07 [95% CI, 1.04-1.11], P<0.001), and arteriolosclerosis (odds ratio, 1.04 [95% CI, 1.01-1.07], P=0.005). C statistics for these models ranged from 0.537 to 0.595 indicating low accuracy for predicting CVD pathologies. FRS was not associated with the presence of cerebral amyloid angiopathy. CONCLUSIONS: A higher FRS score in older adults is associated with higher odds of some, but not all, CVD pathologies, with low discrimination at the individual level. Further work is needed to develop a more robust risk score to identify adults at risk for accumulating CVD pathologies.
BACKGROUND AND PURPOSE: The general cardiovascular Framingham risk score (FRS) identifies adults at increased risk for stroke. We tested the hypothesis that baseline FRS is associated with the presence of postmortem cerebrovascular disease (CVD) pathologies. METHODS: We studied the brains of 1672 older decedents with baseline FRS and measured CVD pathologies including macroinfarcts, microinfarcts, atherosclerosis, arteriolosclerosis, and cerebral amyloid angiopathy. We employed a series of logistic regressions to examine the association of baseline FRS with each of the 5 CVD pathologies. RESULTS: Average age at baseline was 80.5±7.0 years and average age at death was 89.2±6.7 years. A higher baseline FRS was associated with higher odds of macroinfarcts (odds ratio, 1.10 [95% CI, 1.07-1.13], P<0.001), microinfarcts (odds ratio, 1.04 [95% CI, 1.01-1.07], P=0.009), atherosclerosis (odds ratio, 1.07 [95% CI, 1.04-1.11], P<0.001), and arteriolosclerosis (odds ratio, 1.04 [95% CI, 1.01-1.07], P=0.005). C statistics for these models ranged from 0.537 to 0.595 indicating low accuracy for predicting CVD pathologies. FRS was not associated with the presence of cerebral amyloid angiopathy. CONCLUSIONS: A higher FRS score in older adults is associated with higher odds of some, but not all, CVD pathologies, with low discrimination at the individual level. Further work is needed to develop a more robust risk score to identify adults at risk for accumulating CVD pathologies.
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