Table S1.

The categorization of the errors in ABI and baPWV as measured by the Vascular Profiler

	ABI	baPWV
Underestimation or lower value	A low and a borderline ABI in young individuals including children, men under 30 years old, women under 40 years old, especially, a low and a borderline ABI are frequently observed among healthy children and university students of both genders	1. Obstruction such as arterial stenosis in the measurement pathway from the heart to the ankle 2. Moderate to severe aortic valve diseases
Overestimation or high value	1. Arterial calcification in the lower limb 2. Severe aortic valve regurgitation 3. Low brachial systolic BP due to arterial stenosis in the upper limb (particularly hemodialysis patients) 4. Too narrow cuff width for the ankle 5. Too loose ankle cuff setting	Arterial stenosis in the brachial base of the baPWV measurement (from the heart to the brachium)
Measurement error	Inaccurate timing determination of systolic BP in the oscillometric envelope	Inaccurate determination of the upstroke in the pulse waveform

Abbreviations: ABI, ankle-brachial index; baPWV, brachial-ankle pulse wave velocity; BP, blood pressure.