Table 2 : Comparison of measuring tape and digital caliper measurements.
| Landmark | Measuring Tape (n=200) |
Digital caliper (n=200) |
P Value |
| Thyromental Distance (TMD, cm) |
6.8±1.1 | 6.6±1.1 | <0.001 |
| Hyoid to Cricoid Cartilage Distance (HCD, cm) |
6.2±1.4 | 6.1±1.3 | 0.015 |
| Sternomental Distance (SMD, cm) |
16.0±2.0 | 15.3±2.1 | <0.001 |
| Thyroid Cricoid Distance (TCD, cm) |
5.0±0.8 | 5.0±1.0 | 0.82 |
| Thyroid Width (TW, cm) |
5.1±0.8 | 5.0±0.7 | <0.001 |
| Thyroid Height (TH, cm) |
3.5±0.8 | 3.5±0.7 | 0.21 |
| Hyoid mental Distance (HMD, cm) |
3.9±0.9 | 3.8±0.9 | 0.070 |
| Occipital process to C7 Distance (OCD, cm) |
7.7±1.6 | 7.3±1.5 | <0.001 |