(A) Association of regional white matter hyperintensity volume asymmetry with baseline functional status. WMHV, white matter hyperintensity volume; Ant_PVM, anterior periventricular; Post_PVM, posterior periventricular. *Estimates in the table are in reference to right-sided WMHV: a positive estimate signifies lower baseline Barthel index scores with greater WMHV on the right compared to the left. Models are adjusted for: age, sex, diabetes, hypertension, coronary artery disease, physical activity, alcohol use, body mass index, marital status, insurance status, mini-mental state score, total white matter hyperintensity volume, and stroke and myocardial infarction occurring during follow-up. (B) Association of regional white matter hyperintensity volume asymmetry with additional annual functional decline. WMHV, white matter hyperintensity volume; Ant_PVM, anterior periventricular; Post_PVM, posterior periventricular. *Estimates in the table are in reference to right-sided WMHV: a positive estimate signifies additional annual decline in Barthel index scores with greater WMHV on the right compared to the left. Models are adjusted for: age, sex, diabetes, hypertension, coronary artery disease, physical activity, alcohol use, body mass index, marital status, insurance status, mini-mental state score, total white matter hyperintensity volume, and stroke and myocardial infarction occurring during follow-up.