Table 1: Summary of subject's characteristics - part 1 and 2.
| SUBJECT | A | B | C | D | A' | B' | C' | D' |
| Sex | Female | Male | Female | Male | Male | Female | Male | Female |
| Age (years) | 41 | 32 | 30 | 35 | 39 | 27 | 28 | 31 |
| Weight (kg) | 58.2 | 72.3 | 68.0 | 74.0 | 81 | 60 | 74 | 53 |
| Height (cm) | 154 | 165 | 160 | 187 | 187 | 165 | 178 | 166 |
| BMI (kg.m-2) | 24.5 | 26.6 | 26.6 | 21.2 | 23.2 | 22.0 | 23.4 | 19.2 |
| Neck circumference (cm) | 31 | 37.5 | 30.5 | 36.5 | 38.5 | 32.4 | 37 | 32.5 |
| Cricoid depth (mm) | 2.5 | 3.8 | 2.4 | 4.1 | 3.0 | 2.6 | 3.7 | 1.8 |
| Cricoid height (mm) | 7.3 | 5.7 | 5.5 | 5.8 | 7.0 | 5.4 | 6.1 | 4.3 |