From the recordings, we obtained beat-specific waveforms and PTC1 and PTC2 using methods as in Brumback et al.,[1] with a minor adjustment due to the 250 Hz sampling rate at the fifth exam (online Supplemental Figure). We created one PTC1 and one PTC2 for each participant using the median PTC1 and median PTC2 from all beat-specific waveforms from the 60-second recording. Keywords: arterial compliance; pulse waveform; Windkessel model EN arterial compliance pulse waveform Windkessel model 141 143 3 04/12/23 20230401 NES 230401 Several approaches have assessed arterial compliance in population studies, but few compliance measures have been rigorously evaluated for reproducibility. [Extracted from the article]