Table 3.
Mean and standard deviation (SD) of T- and C-levels in charge dB (re:1 nC) for six etiology groups at 5 years of age (n=161 children, 252 ears).
| Etiology | T-level | C-level | ||||
|---|---|---|---|---|---|---|
|
| ||||||
| All electrode arrays: (Perimodiolar and straight) | Perimodiolar electrode array | Straight electrode array | All electrode arrays: (Perimodiolar and straight) | Perimodiolar electrode array | Straight electrode array | |
| 1) Auditory nerve deficiency | ||||||
| Mean ± SD n=ears |
21.3 ± 5.7 (n=12) |
19.1 ± 8.9 (n=3) |
22.1 ± 4.3 (n=9) |
28.8 ± 4.6 (n= 12) |
27.0 ± 10.9 (n=3) |
29.0 ± 2.9 (n=9) |
|
| ||||||
| 2) Cochlear lesions | ||||||
| Mean ± SD n=ears |
17.6 ± 4.9 (n=27) |
16.2 ± 3.8 (n=12) |
18.6 ± 5.6 (n=15) |
25.1 ± 4.6 (n=27) |
24.1 ± 4.1 (n=12) |
26.0 ± 4.9 (n=15) |
|
| ||||||
| 3) LVAS | ||||||
| Mean ± SD n=ears |
14.2 ± 3.4 (n=19) |
13.7 ± 3.4 (n=9) |
14.7 ± 3.5 (n=10) |
21.5 ± 2.6 (n=19) |
21.1 ± 2.0 (n=12) |
21.9 ± 3.2 (n=12) |
|
| ||||||
| 4) ANSD | ||||||
| Mean ± SD n=ears |
14.8 ± 4.7 (n=29) |
14.2 ± 5.4 (n=13) |
15.2 ± 4.1 (n=16) |
22.4 ± 4.0 (n=29) |
22.9 ± 4.0 (n=13) |
22.0 ± 4.0 (n=16) |
|
| ||||||
| 5) Additional disabilities | ||||||
| Mean ± SD n=ears |
14.0 ± 4.0 (n=38) |
13.3 ± 3.8 (n=26) |
15.6 ± 4.4 (n=12) |
21.4 ± 4.8 (n=38) |
20.3 ± 4.7 (n=26) |
24.0 ± 4.2 (n=12) |
|
| ||||||
| 6) Other Mean ± SD n=ears |
14.2 ± 3.5 (n=127) |
13.4 ± 3.1 (n=77) |
15.4 ± 3.8 (n=50) |
21.5 ± 3.4 (n=127) |
20.6 ± 3.4 (n=70) |
22.9 ± 2.8 (n=50) |
Abbreviations: ANSD = auditory neuropathy spectrum disorder, LVAS = large vestibular aqueduct syndrome, n = number of ears.