Table 2.

Chosen timing-based features.

	Feature	Feature Description
7	Travel time of the reflected wave (TR)	describes the timing difference between the forward
		arterial pressure wave and its point of reflection
		$TR=PR\_index/sps$
8	Systolic Upstroke Time (SUT)	describes the duration for the pressure wave to reach its peak
		$SUT=SBP\_index/sps$
9	Diastolic Time (DT)	describes the remaining pulse wave duration after the SUT
		$DT=\left(length\right(pulse\_wave)-SBP\_index)/sps$
10–15	Systolic Width at x% of PP (SWx)	chosen pulse pressure levels: 10%, 25%, 33%, 50%, 66%, 75%
16–21	Diastolic Width at x% of PP (DWx)	chosen pulse pressure levels: 10%, 25%, 33%, 50%, 66%, 75%