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

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)