Table 1.
ABR mean threshold shift and standard deviation as a function of Gy group
| 8 kHz | 16 kHz | 24 kHz | 32 kHz | 40 kHz | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| X | SD | X | SD | X | SD | X | SD | X | SD | ||
| 60 Gy | 2d | 4.4 | 4.1 | 4.3 | 2.5 | 6.3 | 4.1 | 5.1 | 7.1 | 7.5 | 4.1 |
| 4d | 4.4 | 4.1 | 7.0 | 8.2 | 3.8 | 5.0 | 1.1 | 4.1 | 2.0 | 5.0 | |
| 6d | 21.4 | 4.1 | 17.8 | 4.8 | 22.8 | 2.9 | 16.9 | 4.8 | 33.0 | 9.6 | |
| 8d | 52.4 | 13.0 | 50.2 | 16.6 | 58.7 | 15.9 | 52.1 | 13.0 | 43.5 | 4.3 | |
| 40 Gy | 2d | 7.4 | 4.1 | 2.5 | 5.0 | 3.3 | 4.1 | 2.6 | 2.9 | 2.5 | 0.0 |
| 4d | 6.9 | 6.5 | 6.8 | 2.5 | 8.8 | 5.0 | 17.1 | 7.1 | 10.8 | 4.8 | |
| 6d | 11.7 | 6.3 | 5.8 | 8.5 | 9.8 | 5.0 | 14.9 | 4.8 | 16.0 | 2.9 | |
| 8d | 23.0 | 10.8 | 27.8 | 14.4 | 22.0 | 8.7 | 15.3 | 12.6 | 24.7 | 2.9 | |
| 20 Gy | 2d | −1.2 | 2.9 | −3.7 | 2.9 | −6.3 | 2.9 | −9.5 | 2.9 | −6.8 | 2.9 |
| 4d | 2.4 | 10.0 | 0.7 | 2.9 | 1.7 | 2.9 | −3.2 | 5.8 | 0.8 | 2.9 | |
| 6d | 5.8 | 2.9 | 5.7 | 2.9 | 5.3 | 5.0 | 5.1 | 0.0 | 12.5 | 0.0 | |
| 8d | 17.4 | 13.2 | 13.0 | 13.2 | 20.0 | 20.8 | 19.5 | 18.9 | 24.2 | 16.1 | |
| 10 Gy | 2d | 10.4 | 5.0 | 6.0 | 5.0 | 1.7 | 5.8 | −0.9 | 8.7 | 3.2 | 2.9 |
| 4d | 3.4 | 5.0 | 4.3 | 2.9 | 5.0 | 2.9 | 5.5 | 2.9 | 6.2 | 2.9 | |
| 6d | 2.1 | 2.9 | 1.3 | 2.9 | 5.0 | 2.9 | −2.2 | 2.9 | 7.8 | 2.9 | |
| 8d | 2.8 | 2.9 | −3.3 | 2.9 | 4.3 | 5.0 | 2.5 | 7.6 | 2.5 | 5.0 | |