Table 4.
Values (minimum, mean, maximum and standard deviation in milliseconds - ms) and comparison of absolute wave I, III and V and interpeak I-III, III-V and I-V latencies at 80 dBHL and the absolute wave V latency at 60, 40 and 20 dBHL for male and female term and preterm infants
| Term | Preterm | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Measurement | n | Min. (ms) | Mean (ms) | Max. (ms) | Standard deviation (ms) | Median (ms) | n | Min. (ms) | Mean (ms) | Max. (ms) | Standard deviation (ms) | Median (ms) | p-value |
| Wave I - 80dBHL | 72 | 1,23 | 1,57 | 2,37 | 0,29 | 1,50 | 60 | 1,30 | 1,70 | 2,53 | 0,35 | 1,60 | 0,0193a |
| Wave III - 80dBHL | 72 | 3,37 | 4,01 | 4,60 | 0,29 | 4,02 | 60 | 3,57 | 4,14 | 5,00 | 0,29 | 4,13 | 0,0139 |
| Wave V - 80dBHL | 72 | 5,27 | 6,20 | 7,27 | 0,42 | 6,27 | 60 | 5,57 | 6,42 | 7,10 | 0,37 | 6,47 | 0,0030 |
| Wave V - 60dBHL | 72 | 6,07 | 6,89 | 7,73 | 0,37 | 6,90 | 60 | 5,97 | 7,03 | 7,83 | 0,42 | 7,10 | 0,0489 |
| Wave V - 40dBHL | 72 | 6,43 | 7,58 | 8,33 | 0,39 | 7,63 | 60 | 6,67 | 7,63 | 8,33 | 0,39 | 7,62 | 0,5011a |
| Wave V - 20dBHL | 72 | 7,30 | 8,23 | 8,87 | 0,30 | 8,23 | 60 | 7,73 | 8,34 | 8,87 | 0,30 | 8,33 | 0,0330 |
| Interpeak I-III right ear | 36 | 1,67 | 2,42 | 3,07 | 0,34 | 2,40 | 30 | 1,67 | 2,34 | 3,13 | 0,37 | 2,32 | 0,3198 |
| left ear | 36 | 1,57 | 2,46 | 3,17 | 0,42 | 2,52 | 30 | 1,67 | 2,53 | 3,40 | 0,39 | 2,59 | 0,4773 |
| Interpeak III-V | 72 | 1,27 | 2,19 | 2,87 | 0,35 | 2,23 | 60 | 1,40 | 2,28 | 3,03 | 0,35 | 2,27 | 0,1667a |
| Interpeak I-V | 72 | 3,80 | 4,63 | 5,33 | 0,41 | 4,63 | 60 | 3,47 | 4,71 | 5,50 | 0,46 | 4,72 | 0,1834a |
Student's t test /
a
Mann-Whitney test (p<0.05)