| No. of patients | Control | Experimental group | |
| Sex | Male | 7 | 12 |
| Female | 4 | 7 | |
| Age | <20 | 2 | 1 |
| 21 - 30 | 3 | 1 | |
| 31 - 40 | 3 | 2 | |
| 41 - 50 | 2 | 4 | |
| 51 - 60 | 0 | 5 | |
| >60 | 1 | 6 | |
| BMI | <25.0 | 3 | 4 |
| 25.0 - 29.9 | 5 | 8 | |
| 30.0 - 34.9 | 1 | 1 | |
| 35.0 - 39.9 | 1 | 4 | |
| 40 - 45 | 1 | 2 | |
| Mallampati | 1 | 6 | 3 |
| 2 | 5 | 8 | |
| 3 | 0 | 8 | |
| Other Risk Factors | Edentulous | 8 | |
| OSA | 2 | ||
| Bearded | 4 | ||
| Neck irradiated | 0 |