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. Author manuscript; available in PMC: 2021 Aug 9.
Published in final edited form as: Am J Hypertens. 2021 Aug 9;34(7):737–743. doi: 10.1093/ajh/hpab028

Figure 1.

Figure 1

At baseline and follow-up, ultrasonic diastolic diameter (D d), distension, and intima-media thickness (IMT) and oscillometric systolic and diastolic blood pressures (P s and P d, respectively) were measured. From the measurements, the changes at follow-up normalized to follow-up time in years (Δ) were calculated for carotid pulse wave velocity (cPWV), Young’s modulus (E), and the recently introduced stiffness index β 0 (at reference pressure of 100 mm Hg). Assuming a single-exponential model of the pressure–diameter (P–D) curve, pressure-corrected diastolic diameter and IMT (D d,corr and IMTcorr), cPWVcorr, and E corr were derived. The Δ’s of corrected and conventional measures are subsequently used as dependent variables in linear regression modeling.