Table 3.
Comparison between modified C-L grades and airway predictors
| Test | Modified C-L Grades | K (95% CI) | Significance Fisher Exact Test | ||
|---|---|---|---|---|---|
| Easy (n=105) | Difficult (n=35) | Total | |||
| MMT | |||||
| Easy | 90 | 21 | 111 | 0.27 (0.09-0.45) | 0.003 |
| Difficult | 15 | 14 | 29 | ||
| TMD | |||||
| Easy | 79 | 7 | 86 | 0.46 (0.32-0.62) | <0.00001 |
| Difficult | 26 | 28 | 54 | ||
| SMD | |||||
| Easy | 76 | 10 | 86 | 0.37 (0.22-0.53) | <0.00001 |
| Difficult | 29 | 25 | 54 | ||
| NM | |||||
| Easy | 96 | 22 | 118 | 0.35 (0.14-0.51) | 0.0002 |
| Difficult | 9 | 13 | 22 | ||
| MO | |||||
| Easy | 101 | 31 | 132 | 0.10 (0.04-0.25) | 0.1074 |
| Difficult | 4 | 4 | 8 | ||
| Dentition | |||||
| Easy | 91 | 19 | 110 | 0.34 (0.16-0.51) | 0.0002 |
| Difficult | 14 | 16 | 30 | ||
| ULBT | |||||
| Easy | 105 | 25 | 130 | 0.37 (0.20-0.55) | <0.00001 |
| Difficult | 0 | 10 | 10 | ||
| TMHT | |||||
| Easy | 81 | 8 | 89 | 0.47 (0.32-0.62) | <0.00001 |
| Difficult | 24 | 27 | 51 | ||
| RHTMD | |||||
| Easy | 60 | 8 | 68 | 0.25 (0.12-0.38) | 0.0004 |
| Difficult | 45 | 27 | 72 | ||
MMT-Modified Mallampati Test; TMD-Thyromental Distance; SMD-Sternomental Distance; NM-Neck Movement; MO-Mouth Opening; ULBT-Upper Lip Bite Test; RHTMD-Ratio of Height to Thyromental Distance; TMHT-Thyromental Height Test, C-L: Cormack Lehane