| Table 1: Comparison of four visits on Auditory Brainstem Response (ABR). ***P<0.001 |
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ABR parameter |
Ear |
First visit |
|
Second visit |
|
Third visit |
|
Fourth visit |
|
F-value |
|
|
Mean |
S.D. |
Mean |
S.D. |
Mean |
S.D. |
Mean |
S.D. |
|
Latency of wave I(ms) |
Right |
1.55 |
0.06 |
1.54 |
0.05 |
1.53 |
0.05 |
1.52 |
0.04 |
7.65*** |
Left |
1.53 |
0.06 |
1.53 |
0.04 |
1.53 |
0.04 |
1.51 |
0.03 |
2.01 |
|
Latency of wave III(ms) |
Right |
3.69 |
0.14 |
3.68 |
0.12 |
3.65 |
0.13 |
3.64 |
0.10 |
1.16 |
Left |
3.67 |
0.14 |
3.64 |
0.13 |
3.66 |
0.11 |
3.63 |
0.11 |
1.52 |
|
Latency of wave V(ms) |
Right |
5.53 |
0.13 |
5.51 |
0.12 |
5.53 |
0.12 |
5.51 |
0.11 |
0.87 |
Left |
5.54 |
0.16 |
5.54 |
0.13 |
5.55 |
0.11 |
5.52 |
0.10 |
2.09 |
|
Interpeak latency |
Right |
2.14 |
0.14 |
2.14 |
0.10 |
2.12 |
0.10 |
2.13 |
0.09 |
0.32 |
Left |
2.13 |
0.13 |
2.11 |
0.13 |
2.13 |
0.10 |
2.12 |
0.10 |
0.90 |
|
Interpeak latency |
Right |
1.85 |
0.16 |
1.84 |
0.13 |
1.88 |
0.09 |
1.87 |
0.11 |
1.21 |
Left |
1.87 |
0.12 |
1.90 |
0.12 |
1.88 |
0.10 |
1.88 |
0.10 |
0.97 |
|
Interpeak latency |
Right |
3.99 |
0.12 |
3.98 |
0.12 |
4.00 |
0.10 |
4.00 |
0.10 |
0.60 |
Left |
4.00 |
0.15 |
4.02 |
0.13 |
4.02 |
0.11 |
4.01 |
0.10 |
0.55 |
|