Table 2
Total tones heard (of possible 12) Pre versus Post.
| PRE | POST | |||
| Gender/Age | Right | Left | Right | Left |
| F/67 | 1 | 5 | 7 | 8 |
| F/65 | 1 | 3 | 6 | 6 |
| M/71 | 2 | 8 | 6 | 6 |
| M/49 | 2 | 7 | 8 | 8 |
| M/34 | 3 | 5 | 6 | 8 |
| F/61 | 3 | 4 | 5 | 5 |
| M/48 | 3 | 4 | 11 | 8 |
| M/37 | 3 | 8 | 8 | 10 |
| M/38 | 4 | 7 | 8 | 10 |
| M/57 | 4 | 6 | 8 | 9 |
| M/71 | 5 | 5 | 6 | 4 |
| F/56 | 5 | 8 | 5 | 5 |
| F/64 | 6 | 5 | 4 | 7 |
| M/51 | 6 | 3 | 8 | 10 |
| M/41 | 7 | 5 | 8 | 7 |
| TOTAL | 55 | 83 | 104 | 111 |