| Upright | Supine | ||
---|---|---|---|---|
Count (%) | Mean ± SD | Count (%) | Mean ± SD | |
Sex | ||||
 Female | 100 (50%) |  | 100 (50%) |  |
 Male | 100 (50%) |  | 100 (50%) |  |
Age (years) | ||||
 Female |  | 46.36 ± 11.74 |  | 42.78 ± 15.86 |
 Male |  | 45.84 ± 16.74 |  | 42.64 ± 16.21 |