Table 5.

Eighteen demographic time-domain features.

Feature	Definition
58. Height/∆T	It is known as stiffness index
59. Weight/∆T	The ratio of weight to ∆T
60. BMI/∆T	The ratio of BMI to ∆T
61. Height/t1	The ratio of height to the systolic peak time
62. Weight/t1	The ratio of weight to the systolic peak time
63. BMI/t1	The ratio of BMI to the systolic peak time
64. Height/t2	The ratio of height to the notch time
65. Weight/t2	The ratio of weight to the notch time
66. BMI/t2	The ratio of BMI to the notch time
67. Height/t3	The ratio of height to the diastolic peak time
68. Weight/t3	The ratio of weight to the diastolic peak time
69. BMI/t3	The ratio of BMI to the diastolic peak time
70. Height/tpi	The ratio of height to the pulse interval
71. Weight/tpi	The ratio of weight to the pulse interval
72. BMI/tpi	The ratio of BMI to the pulse interval
73. Height/tpp	The ratio of height to the peak-to-peak interval
74. Weight/tpp	The ratio of weight to the peak-to-peak interval
75. BMI/tpp	The ratio of BMI to the peak-to-peak interval