| Follow-up time | 3 months | 3 - 6 months | 6 - 12 months | 12 - 18 months | Total |
| HHS Grading |
|
|
|
|
|
| Poor | 1 | 0 | 0 | 2 | 3 |
| Fair | 0 | 0 | 0 | 1 | 1 |
| Good | 0 | 3 | 5 | 1 | 9 |
| Excellent | 1 | 3 | 4 | 0 | 8 |
| Total | 2 | 6 | 9 | 4 | 21 |