Table 2. Characteristics of the Study Populationa.
| Characteristic | No. (%) |
|---|---|
| Severity of obstructive sleep apnea syndrome | |
| Mild | 8 (16.0) |
| Moderate | 14 (28.0) |
| Severe | 28 (56.0) |
| Examination of pharynx (n = 46) | |
| Mallampati class | |
| 1 | 3 (6.5) |
| 2 | 19 (41.3) |
| 3 | 22 (47.8) |
| 4 | 4 (8.7) |
| Tonsil grade (n = 47) | |
| Size 0 | 15 (31.9) |
| Size 1 | 15 (31.9) |
| Size 2 | 11 (23.4) |
| Size 3 | 3 (6.4) |
| Size 4 | 3 (6.4) |
| Muller maneuver in retropalatal area (n = 48) | |
| Obstruction | |
| Lateral | 21 (43.8) |
| Anteroposterior | 3 (6.3) |
| Circular | 8 (16.7) |
| None | 16 (33.3) |
| Muller maneuver in retrolingual area (n = 48) | |
| Obstruction | |
| Lateral | 10 (20.8) |
| Anteroposterior | 8 (16.7) |
| Circular | 6 (12.5) |
| None | 24 (50.0) |
| Mandibular plane to hyoid, mm (n = 36)b | |
| ≥20 | 26 (72.2) |
| <20 | 10 (27.8) |
| Previous otolaryngologic surgery (n = 47) | |
| Tonsillectomy | 15 (31.9) |
a
N = 50.
b
Mean (SD), 25.7 (7.5) mm.