Summary of results
| Characteristic | Easy intubation group | Number | Difficult intubation group | Number | p Value |
|---|---|---|---|---|---|
| *Significance accepted at the level of 0.05 = 5%; NS, non-significant. †Fisher’s exact test (two tailed); ‡Student’s t test (two tailed). | |||||
| Number of patients | 114 | — | 42 | — | — |
| Sex ratio (M/F) | 75/39 | 114 | 32/10 | 42 | 0.25 NS† |
| Male percentage | 65.8 | 76.2 | |||
| Mean (SD) | Mean (SD) | ||||
| Age | 53.8 (23.2) | 114 | 55.7 (18.7) | 42 | 0.86 NS‡ |
| Look | % | % | |||
| Facial trauma | 11.3 | 106 | 12.2 | 41 | 1.0 NS† |
| Large incisors | 6.5 | 108 | 28.6 | 42 | <0.001 *† |
| Beard or moustache | 6.3 | 111 | 9.8 | 41 | 0.49 NS† |
| Large tongue | 1.0 | 104 | 2.4 | 41 | 0.49 NS† |
| Evaluate | % | % | |||
| Incisor distance 3+ | 61.8 | 76 | 31.0 | 29 | <0.05 *† |
| Incisor distance <3 | 38.2 | 69.0 | |||
| Hyoid / mental dist 3+ | 65.8 | 76 | 54.2 | 24 | 0.34 NS† |
| Hyoid / mental dist <3 | 34.2 | 45.8 | |||
| Thyroid to mouth 2+ | 86.6 | 82 | 58.3 | 24 | <0.05*† |
| Thyroid to mouth <2 | 13.4 | 41.2 | |||
| Mallampatti | % | % | |||
| Grade 1 or 2 | 67.2 | 67 | 78.9 | 19 | 0.41 NS† |
| Grade 3 or 4 | 32.8 | 21.1 | |||
| Obstruction | % | % | |||
| Obstructed airway | 6.5 | 108 | 14.3 | 42 | 0.19 NS† |
| Neck mobility | % | % | |||
| In collar/limited | 16.2 | 105 | 28.6 | 42 | 0.11 NS† |
| Full and free | 83.8 | 71.41 | |||