Table 4.

Study outcomes and assessment tools.

Study	Outcomes	Tools Used for Assessment
Heffernan, K., 2007	cfPWV	Applanation tonometry high-fidelity strain-gauge transducer (Millar Instruments, Houston TX, USA) and electrocardiogram monitoring
Heffernan, K., 2008	cfPWV, Aortic Alx and AiX@75, Aortic SBP/DBP	Applanation tonometry (Millar Instruments, Houston, TX) and electrocardiogram monitoring SphygmoCor (AtCor Medical, Sydney Australia)
Ruan, L., 2009	afPWV	Echocardiograph (ECG, Power Vision Toshiba SSH-380 Digital Ultrasound System, Toshiba America Medical Systems Carrollton, TX) Nondirectional transcutaneous doppler flow probe (Toshiba PCK3AT, 7.5 MHz)
Heffernan, K., 2009	cfPWV, Aortic Alx and Alx@75 aortic SBP,DBP	Applanation tonometry high-fidelity strain gauge transducer (Millar Instruments, Houston TX, USA) and SphygmoCor (AtCor Medical, Sydney, Australia)
Ashraf, A., 2012	cfPWV, Aortic Alx and Alx@75, aortic SBP/DBP	SphygmoCor (AtCor Medical, Sydney, Australia)
Morris, A., 2012	cfPWV, Aortic Alx and Alx@75	SphygmoCor (AtCor Medical, Australia), tonometry and electrocardiographic gating
Yan, H., 2014	Alx, cfPWV, Aortic Alx and Alx@75, aortic SBP/DBP,	Applanation tonometry high-fidelity strain gauge transducer(Millar Instruments, Houston TX, USA) and SphygmoCor (AtCor Medical, Sydney, Australia)
RanadiveS., 2016	cfPWV, Aortic Alx,	Applanation tonometry high-fidelity strain gauge transducer(Millar Instruments, Houston TX, USA) and SphygmoCor (AtCor Medical, Sydney, Australia)
Wendell, C, 2017	cfPWV	Non-directional transcutaneous doppler probe (Model 810A, 9–10-Mhz probes, Parks Medical Electronics, Inc.)
Wendell, C, 2017	cfPWV	Non-directional transcutaneous doppler probe (Model 810A, 9–10-Mhz probes, Parks Medical Electronics, Inc.)
Yan, H., 2017	cfPWV and afPWV	Applanation tonometry high-fidelity strain gauge transducer(Millar Instruments, Houston TX, USA) and SphygmoCor (AtCor Medical, Sydney, Australia)