Table 3.
Simple main effects of Group on ABR wave amplitudes over time
| 80 dB SPL |
30 dB SL |
|||||
|---|---|---|---|---|---|---|
| Simple Main Effects/Time | Mean Square | F | P | Mean Square | F | P |
| Click | ||||||
| Wave I | ||||||
| Day 1 | 13.942 | 31.329 | <0.001 | 2.097 | 8.019 | 0.013 |
| Day 4 | 12.438 | 30.917 | <0.001 | 1.843 | 7.730 | 0.015 |
| Day 7 | 4.081 | 18.418 | <0.001 | 0.024 | 0.102 | 0.754 |
| Day 10 | 1.601 | 7.023 | 0.019 | 0.020 | 0.127 | 0.726 |
| Day 14 | 3.180 | 10.008 | 0.007 | 0.596 | 3.044 | 0.103 |
| Day 30 | 1.517 | 8.285 | 0.012 | 0.184 | 1.829 | 0.198 |
| Day 60 | 1.013 | 4.393 | 0.055 | 0.102 | 0.632 | 0.440 |
| Wave III | ||||||
| Day 1 | 9.708 | 30.148 | <0.001 | 1.977 | 6.629 | 0.022 |
| Day 4 | 5.754 | 23.070 | <0.001 | 0.692 | 3.416 | 0.086 |
| Day 7 | 3.725 | 33.967 | <0.001 | 0.470 | 3.917 | 0.068 |
| Day 10 | 1.690 | 11.712 | 0.004 | 0.093 | 0.665 | 0.429 |
| Day 14 | 0.854 | 8.587 | 0.011 | 0.039 | 0.474 | 0.502 |
| Day 30 | 0.634 | 4.714 | 0.048 | 0.005 | 0.088 | 0.771 |
| Day 60 | 0.064 | 0.315 | 0.584 | 0.029 | 0.219 | 0.647 |
| Wave V | ||||||
| Day 1 | 17.134 | 45.066 | <0.001 | 3.596 | 9.213 | 0.009 |
| Day 4 | 14.672 | 35.376 | <0.001 | 2.178 | 8.580 | 0.011 |
| Day 7 | 4.419 | 13.382 | 0.003 | 0.056 | 0.132 | 0.722 |
| Day 10 | 2.264 | 8.415 | 0.012 | 0.012 | 0.043 | 0.839 |
| Day 14 | 4.709 | 16.223 | 0.001 | 0.104 | 0.347 | 0.565 |
| Day 30 | 1.214 | 3.651 | 0.077 | 0.009 | 0.028 | 0.870 |
| Day 60 | 0.414 | 1.155 | 0.301 | 0.002 | 0.007 | 0.934 |
| 8 kHz | ||||||
| Wave I | ||||||
| Day 1 | 7.136 | 45.959 | <0.001 | 0.000 | 0.004 | 0.948 |
| Day 4 | 6.915 | 37.954 | <0.001 | 0.001 | 0.014 | 0.909 |
| Day 7 | 1.892 | 15.704 | 0.001 | 0.017 | 0.551 | 0.470 |
| Day 10 | 0.754 | 2.693 | 0.123 | 0.014 | 0.159 | 0.696 |
| Day 14 | 0.803 | 4.657 | 0.049 | 0.010 | 0.096 | 0.762 |
| Day 30 | 0.421 | 2.532 | 0.134 | 0.001 | 0.015 | 0.904 |
| Day 60 | 0.285 | 1.562 | 0.232 | 0.006 | 0.450 | 0.513 |
| Wave III | ||||||
| Day 1 | 5.977 | 37.898 | <0.001 | 0.084 | 0.838 | 0.375 |
| Day 4 | 4.139 | 36.832 | <0.001 | 0.000 | 0.000 | 0.984 |
| Day 7 | 3.544 | 23.802 | <0.001 | 0.034 | 0.703 | 0.416 |
| Day 10 | 0.990 | 5.847 | 0.030 | 0.017 | 0.232 | 0.637 |
| Day 14 | 0.167 | 0.851 | 0.372 | 0.055 | 1.274 | 0.278 |
| Day 30 | 0.022 | 0.131 | 0.722 | 0.041 | 0.301 | 0.592 |
| Day 60 | 0.167 | 0.640 | 0.437 | 0.062 | 1.420 | 0.253 |
| Wave V | ||||||
| Day 1 | 6.374 | 100.269 | <0.001 | 0.020 | 0.135 | 0.719 |
| Day 4 | 4.459 | 28.229 | <0.001 | 0.005 | 0.165 | 0.691 |
| Day 7 | 1.580 | 11.078 | 0.005 | 0.129 | 3.798 | 0.072 |
| Day 10 | 0.392 | 2.043 | 0.175 | 0.104 | 1.256 | 0.281 |
| Day 14 | 0.449 | 3.269 | 0.092 | 0.001 | 0.010 | 0.924 |
| Day 30 | 0.006 | 0.026 | 0.875 | 0.018 | 0.149 | 0.705 |
| Day 60 | 0.017 | 0.060 | 0.811 | 0.007 | 0.187 | 0.672 |
| 16 kHz | ||||||
| Wave I | ||||||
| Day 1 | 5.090 | 40.130 | <0.001 | 0.205 | 2.470 | 0.138 |
| Day 4 | 5.910 | 61.374 | <0.001 | 0.026 | 0.827 | 0.378 |
| Day 7 | 2.397 | 29.278 | <0.001 | 0.090 | 2.321 | 0.150 |
| Day 10 | 0.723 | 4.602 | 0.050 | 0.009 | 0.305 | 0.590 |
| Day 14 | 1.766 | 24.888 | <0.001 | 0.009 | 0.153 | 0.701 |
| Day 30 | 0.515 | 6.551 | 0.023 | 0.000 | 0.000 | 0.992 |
| Day 60 | 0.205 | 2.242 | 0.156 | 0.022 | 1.009 | 0.332 |
| Wave III | ||||||
| Day 1 | 3.592 | 39.592 | <0.001 | 0.205 | 2.470 | 0.138 |
| Day 4 | 2.919 | 38.728 | <0.001 | 0.026 | 0.827 | 0.378 |
| Day 7 | 2.507 | 35.072 | <0.001 | 0.090 | 2.321 | 0.150 |
| Day 10 | 0.965 | 11.997 | 0.004 | 0.009 | 0.305 | 0.590 |
| Day 14 | 0.676 | 8.374 | 0.012 | 0.009 | 0.153 | 0.701 |
| Day 30 | 0.253 | 3.337 | 0.089 | 0.000 | 0.000 | 0.992 |
| Day 60 | 0.006 | 0.056 | 0.816 | 0.022 | 1.009 | 0.332 |
| Wave V | ||||||
| Day 1 | 4.772 | 37.802 | <0.001 | 0.118 | 1.617 | 0.224 |
| Day 4 | 3.414 | 44.163 | <0.001 | 0.000 | 0.005 | 0.945 |
| Day 7 | 2.150 | 21.095 | <0.001 | 0.066 | 1.575 | 0.230 |
| Day 10 | 0.902 | 7.214 | 0.018 | 0.000 | 0.002 | 0.961 |
| Day 14 | 1.283 | 15.210 | 0.002 | 0.017 | 0.336 | 0.571 |
| Day 30 | 0.100 | 0.888 | 0.362 | 0.103 | 1.301 | 0.273 |
| Day 60 | 0.019 | 0.293 | 0.597 | 0.079 | 1.541 | 0.235 |
Postblast auditory brainstem response (ABR) amplitudes of Blast (n = 10) and Sham (n = 6) groups were compared using repeated measures ANOVA at each time point recorded. SL, sound level; SPL, sound pressure level. P < 0.05 showed significant simple main effect of Group at that time point. Bold text indicates P < 0.05.