| Variables |
|
| Age (years) | 64.5 ± 9.5 |
| Male/Female | 10/3 |
| Height (cm) | 162.5 ± 8.5 |
| Body weight (kg) | 67.5 ± 8.6 |
| Distance between two transducers (cm) | 20.4 ± 1.8 |
| Hypertension (n) | 6 |
| Diabetes mellitus (n) | 4 |
| Others (n) | CAD (1), CKD (1), HL (1), old Tb (1), RA(1) |