Relation between postoperative improvement of tongue base retraction and postoperative head shift
| Sagittal head shift | |||
|---|---|---|---|
| Present | Absent | ||
| Tongue base retraction | |||
| Improved after surgery | 1 | 6 | |
| Unchanged or deteriorated after surgery | 4 | 1 | |
p=0.045 (Fisher's exact test).