Demographic, retinal, and MRI measures in study participants.

When p values were not listed they were at least > 0.4. WM–white matter, CRAE–central retinal arterial equivalents, CRVE–central retinal venous equivalents. FA–fractional anisotropy, MD–mean diffusivity, All fractal dimension values are dimensionless. A straight line has a fractal dimension of 1, and a plane has a fractal dimension of 2. FA and MD values range between 0 and 1 and are dimensionless. CRAE and CRVE are in microns. CRAE/CRVE is dimensionless. All volumes (total gray, subcortical volumes, and log of WM hyperintensities) are in milliliters. For continuous variables (i.e. all variables except number with hypertension, and number of African Americans) values listed are means with the standard deviation in parentheses. CD4 number is cells per microliter.