| Category | Number of patients (n=268) |
|---|---|
| Brodsky tonsil score | |
| I | 97 |
| II | 121 |
| III | 46 |
| IV | 4 |
| Obstruction site | |
| Retropalatal AP | |
| Grade 0 | 26 |
| Grade 1 | 20 |
| Grade 2 | 222 |
| Retropalatal lateral | |
| Grade 0 | 48 |
| Grade 1 | 56 |
| Grade 2 | 164 |
| Retrolingual AP | |
| Grade 0 | 75 |
| Grade 1 | 94 |
| Grade 2 | 99 |
| Retrolingual lateral | |
| Grade 0 | 77 |
| Grade 1 | 99 |
| Grade 2 | 92 |