Table 1 Patient characteristics and difficult intubation profiles
|  | King Vision n = 33 | McGrath n = 33 | Macintosh n = 33 | p value |
|---|---|---|---|---|
Men (%) | 15 (45%) | 19 (58%) | 16 (48%) | NS |
Age; years | 38 (12) | 36 (11) | 40 (11) | NS |
BMI; Kg·m−2 | 22 (3) | 22 (3) | 22 (3) | NS |
ASA class I/II (%) | 11/22 (33/67%) | 15/18 (45/55%) | 13/20 (40/60%) | NS |
Neck movement < 80° (%) | 2 (6%) | 1 (3%) | 1 (3%) | NS |
Mallampati III or IV (%) | 30 (91%) | 31 (94%) | 30 (91%) | NS |
Interincisor gap < 3 cm (%) | 9 (27%) | 10 (30%) | 8 (27%) | NS |
Thyromental distance < 6 cm (%) | 8 (27%) | 9 (27%) | 11 (33%) | NS |
Ability to prognath (%) | 30 (91%) | 28 (85%) | 29 (88%) | NS |
EGRI scores | 3 (2,4.5) | 3 (2.5,4) | 3 (2,4) | NS |