CRP and diabetes mellitus: There were no significant differences in the 24-h mean heart rate, 24-h mean systolic blood pressure (SBP), atrial fibrillation (paroxysmal atrial fibrillation and persistent atrial fibrillation), reactive hyperemia index (RHI), high-sensitivity C-reactive protein (hs-CRP) level, and history of coronary heart disease, stroke, and diabetes among the three groups.