Patient demographics
| Total (n=105) | Female (n=62) | Male (n=43) | P values (male vs female) | |
| Age (year) | 53 (20, 69) | 53 (20, 69) | 54 (20, 65) | 0.757 |
| Weight (kg) | 64.0±9.8 | 60. 6±8.9 | 68.9±8.7 | <0.001 |
| Height (cm) | 164.8±8.5 | 160.0±6.6 | 171.7±5.9 | <0.001 |
| BMI | 23.0 (17.0, 33.7) | 22.8 (18.8, 33.7) | 23.1 (17.0, 30.9) | 0.669 |
| VCD (cm) | 2.9±0.6 | 2.9±0.6 | 3.0±0.6 | 0.607 |
| TCD (cm) | 3.6 (1.3, 6.4) | 3.4 (1.3, 6.4) | 3.6 (1.9, 6.4) | 0.124 |
Variables are presented as mean±SD (range) or median (range).
BMI, body mass index; TCD, tip-carina distance; VCD, vocal cords-cuff distance.