Table 1.

Patient characteristics. Data as %, n (%), or mean ± SD.

Age, yrs	46 ± 15
Sex, male	64
BMI, kg/m2	29 ± 7
Physical class
1	25 (20)
2	48 (39)
3	49 (40)
4	1 (1)
Mallampati score ≥3	13 (11)
Thyromental distance <6 cm	26 (21)
Interincisor gap <3 cm	7 (6)
Reduced cervical mobility	15 (12)
Cannot bite any part of upper lip	6 (5)
History of difficult intubation	2 (2)
>1 risk factor for difficult laryngoscopy	13 (11)

BMI: body mass index.