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Table 1 Basic characteristics and brief descriptions of the physical factors used in this study

From: Association of hypertension with physical factors of wrist pulse waves using a computational approach: a pilot study

Variable Normotension Hypertension Description (unit)
Subjects 341 52 Number of normal subjects and hypertensive subjects
HEIGHT 155.8 (5.284) 154.3 (4.334) Height
WEIGHT 58.497 (8.075) 59.187 (8.385) Weight
BMI 24.063 (2.909) 24.823 (3.052) Body mass index
Age 56.9 (5.525) 59.154 (5.782) Age
SBP 113.9 (11.95) 148.2 (11.4) Systolic blood pressure
DBP 70.45 (7.993) 85.6 (8.132) Diastolic blood pressure
L-PPI 3.101 (0.667) 3.666 (0.864) Maximum pulse amplitude in the left Gwan (V: voltage)
L-PDI 6 (1.709) 6.005 (1.823) Sensor displacement from the skin contact point to the location of maximum pulse pressure in the left Gwan (mm)
L-Sum-30p 85.93 (40.19) 99.55 (49.78) Sum of the pulse wave areas of the region of the pulse waves with amplitudes higher than 30 % of PPI in the left Gwan (V · s)
L-Sum-30p-PPI 54.78 (25.61) 61.65 (29.59) Sum of the pulse wave areas of the region between the 30 % point of PPI and PPI in the left Gwan (V · s)
L-Sum-1.12v 82.7 (41.23) 98.58 (51.61) Sum of the pulse wave areas of the region with pulse amplitudes higher than 1.12 V in the left Gwan (V · s)
L-Sum-1.12v-PPI 51.54 (26.97) 60.68 (31.76) Sum of the pulse wave areas of the region between pulse amplitudes higher than 1.12 V and PPI in the left Gwan (V · s)
L-Asys-HR75 43.02 (3.749) 42.86 (3.214) Area of systolic period after normalization with HR75 in the left Gwan (V · s)
L-PSD-w1 43.63 (8.169) 47.67 (8.837) Power spectral density (PSD) at the first harmonic frequency in the left Gwan (Vrms2/Hz)
L-PSD-w2 10.56 (2.002) 11.5 (2.091) PSD at the second harmonic frequency in the left Gwan (Vrms2/Hz)
L-PSD-0-13Hz 21.41 (1.919) 22.36 (1.663) Area of PSD between 0 and 13 Hz in the left Gwan (Vrms2)
R-PPI 3.142 (0.693) 3.979 (0.992) Maximum pulse amplitude in the right Gwan (V: voltage)
R-PDI 5.909 (1.737) 6.394 (2.196) Sensor displacement from skin contact point to the location of maximum pulse pressure in the right Gwan (mm)
R-Sum-30p 83.02 (35.14) 108.8 (48.24) Sum of the pulse wave areas of the region of the pulse waves with amplitudes higher than 30 % of PPI in the right Gwan (V · s)
R-Sum-30p-PPI 52.58 (21.48) 70.68 (32.82) Sum of the pulse wave areas of the region between the 30 % point of PPI and PPI in the right Gwan (V · s)
R-Sum-1.12v 79.92 (35.85) 108.7 (50.34) Sum of the pulse wave areas of the region with pulse amplitudes higher than 1.12 V in the right Gwan (V · s)
R-Sum-1.12v-PPI 49.48 (22.27) 70.48 (35.33) Sum of the pulse wave areas of the region between pulse amplitudes higher than 1.12 V and PPI in the right Gwan (V · s)
R-Asys-HR75 43.16 (4.031) 43.88 (3.981) Area of systolic period after normalization with HR75 in the right Gwan (V · s)
R-PSD-w1 41.63 (8.362) 46.22 (8.837) PSD at first harmonic frequency in the right Gwan (Vrms2/Hz)
R-PSD-w2 9.984 (1.972) 10.73 (2.149) PSD at second harmonic frequency in the right Gwan (Vrms2/Hz)
R-PSD-0-13Hz 20.85 (2.212) 22.25 (2.359) Area of PSD between 0 and 13 Hz in the right Gwan (Vrms2)