Table 2. Demographic Data.
| Group S (n = 97) | Group R (n = 96) | |
|---|---|---|
| Age (yr) | 50.7 ± 9.8 | 51.8 ± 8.1 |
| Sex (M/F) | 48/49 | 49/47 |
| Height (cm) | 163.2 ± 8.7 | 164.2 ± 7.6 |
| Body weight (kg) | 76.7 ± 13.8 | 79.5 ± 13.8 |
| Body mass index (kg/m2) | 28.7 ± 5.9 | 29.6 ± 5.0 |
| Airway difficulty scores | ||
| 8 | 44 (45.4) | 45 (46.9) |
| 9 | 28 (28.9) | 25 (26.0) |
| ≥10 | 25 (25.8) | 26 (27.1) |
Values are expressed as number of patients (%) or mean ± SD. Group S: sniffing position, Group R: ramped position. At the score of ≥ 8, ventilation and/or intubation is likely to be difficult.