Table 4
Criteria of hearing loss missing one of eight tones at 25 dB (total of four possible in each ear) before and after one chiropractic manipulative visit. All patients classified as hearing impaired before.
| PRE | POST | CHANGE | ||||
| Gender/Age | Right | Left | Right | Left | Right | Left |
| F/67 | 0 | 1 | 2 | 4 | +2 | +3 |
| F/65 | 2 | 2 | 2 | 2 | NC | |
| M/71 | 0 | 1 | 0 | 1 | NC | |
| M/49 | 2 | 2 | 2 | 2 | NC | |
| M/34 | 1 | 2 | 2 | 2 | + | |
| F/61 | 2 | 1 | 1 | 1 | + | |
| M/48 | 2 | 1 | 3 | 2 | + | + |
| M/37 | 2 | 2 | 2 | 2 | NC | |
| M/38 | 1 | 2 | 2 | 3 | + | + |
| M/57 | 0 | 1 | 2 | 2 | +2 | +1 |
| M/71 | 2 | 0 | 2 | 1 | +1 | |
| F/56 | 0 | 1 | 1 | 1 | +1 | |
| F/64 | 0 | 0 | 1 | 2 | +1 | +2 |
| M/51 | 2 | 1 | 2 | 2 | +1 | |
| M/41 | 1 | 2 | 2 | 2 | +1 | |
| TOTAL | 17 | 19 | 26 | 29 | +9 | +10 |