Table 3.
Auditory Brainstem Potentials (ABRs): Incidence of detection, absolute latencies, and intercomponent times with statistical difference between the groups.
| n | Waves | ||||
|---|---|---|---|---|---|
| Incidence | I | II | III | IV-V | |
| NFL | 18 | 17 | 15 | 17 | 18 |
| NFL+AN | 16 | 6 | 5 | 10 | 12 |
| Difference between two | <.001 | <.001 | <.001 | <.001 | |
| proportions (p) | |||||
| Normal values | 23 | 23 | 23 | 23 | 23 |
| Latencies (ms) | |||||
| NFL | 18 | 1.65±.15 | 2.8±.16 | 3.84±.20 | 5.66±.21 |
| NFL+AN | 16 | 1.83±.16 | 3.3±.08 | 4.41±.17 | 6.67±.30 |
| Mann Whitney U test (p) | ns | <.001 | <.001 | <.001 | |
| Normal values – female | 12 | 1.61±.12 | 2.72±.12 | 3.72±.12 | 5.60±.20 |
| - male | 11 | 1.64±.13 | 2.84±.15 | 3.84±.17 | 5.79±.25 |
| Intercomponent intervals (ms) | I-II | II-III | III-V | I-V | |
| NFL | 14 | 1.15±.14 | 1.04±.13 | 1.82±.16 | 4.01±.12 |
| NFL+AN | 6 | 1.51±.14 | 1.1±.20 | 2.24±.25 | 4.76±.21 |
| Mann Whitney U test (p) | <.001 | ns | <.001 | <.001 | |
| Normal values – female | 12 | 1.11±.11 | 1.00±.08 | 1.88±.12 | 3.99±.15 |
| - male | 11 | 1.20±14 | 1.00±.09 | 1.15±.15 | 4.12±.25 |
n = Number of ABR averages; ns = non significant