2.4 Data collection
The same researcher collected clinical and ultrasound data of all
patients, including gender, age, height, weight, body mass index (BMI),
body surface area (BSA), hypertension, diabetes, CHD, atrial
fibrillation (AF), history of cerebral infarction, peripheral arterial
disease, smoking history, pulse rate on admission, systolic blood
pressure (SBP) on admission, diastolic blood pressure (DBP) on
admission, fasting blood glucose (FBG), total cholesterol (TC),
triglyceride (TG), diameter of the radial artery, depth of the radial
artery, PSV(peak systolic velocity) in the radial artery, diameter of
the distal radial artery,, depth of the distal radial artery, PSV in the
distal radial artery. BSA was calculated using the Mosteller formula(9). All data were entered into the database by the
same researcher. Another researcher checked all the data. In case of any
questionable data, they were re-checked by another researcher.