Table 1.

Quantitative Intracranial Vascular MR Imaging Variables according to Race and Sex

Note.—All measurements except for wall volume are averaged over the fixed length for each vessel segment. Measurements are weighted to the ARIC participant recruitment pool (n = 6538). P values represent the difference among the four mean values with regression analysis adjusted for age and imaging sites, corrected for the survey design. Numbers in parentheses are standard errors. ACA = anterior cerebral artery, BA = basilar artery, ICA = internal carotid artery, MCA = middle cerebral artery, VA = vertebral artery.