Age- and sex-adjusted means and standard errors for vascular function measures according to number of MS components. For brachial artery diameter and flow-mediated dilation n=337, 479, 545, 462, 300 and for baseline flow velocity and hyperemic flow velocity n=257, 372, 374, 322, 196 for 0, 1, 2, 3, and 4+ components respectively. Error bars represent one standard error. P value for trend <0.0001 for each measure.