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Table 1 Variable demographic data for the 434 human volunteers enrolled in the normal THI range study

From: Tissue hemoglobin index: a non-invasive optical measure of total tissue hemoglobin

Characteristic

Mean ± standard deviation

Coefficient of variation (%)

Age (years)

42.3 ± 10.72

25

Height (cm)

172.0 ± 10.72

6

Weight (kg)

83.5 ± 18.95

23

Body mass index (kg/m2)

28 ± 6.1

22

Systolic blood pressure (mmHg)

128 ± 18.6

15

Diastolic blood pressure (mmHg)

80 ± 11.5

14

Mean arterial pressure (mmHg)

96 ± 13.0

14

Heart rate (beats/minute)

70 ± 11.2

16

Thenar eminence StO2 (%)

81.4 ± 5.25

6

Thenar eminence THI

14.1 ± 1.60

11

  1. Coefficient of variation = (Mean/Standard deviation) × 100. Variation in the tissue hemoglobin index (THI) among subjects was less than blood pressure and heart rate. StO2, tissue hemoglobin oxygen saturation.