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