|
Age groups, years
|
All
|
16–44 y
|
45–64 y
|
> 64 y
|
|---|
|
(N = 45)
|
(n = 28)
|
(n = 14)
|
(n = 3)
|
|---|
|
N (%)
|
N (%)
|
N (%)
|
N (%)
|
|---|
|
Hearing loss in at least one eara
| | | | |
|
Mild (20–34 dB)
|
18 (40)
|
12 (43)
|
6 (43)
|
0 (0)
|
|
Disabling (≥ 35 dB)
|
6 (13)
|
2 (7)
|
1 (7)
|
3 (100)
|
|
Unilateral hearing lossa
| | | | |
|
Mild (20–34 dB)
|
3 (7)
|
3 (11)
|
0 (0)
|
(0)
|
|
Disabling (≥ 35 dB)
|
2 (4)
|
2 (8)
|
0 (0)
|
(0)
|
|
Hearing loss in the better earb
| | | | |
|
Mild (20–34 dB)
|
15 (33)
|
9 (32)
|
6 (43)
|
0 (0)
|
|
Disabling (≥ 35 dB)
|
4 (9)
|
0 (0)
|
1 (7)
|
3 (100)
|
|
Abnormal tympanometryc
| | | | |
|
Unilateral
|
8 (18)
|
5 (18)
|
3 (21)
|
0 (0)
|
|
Bilateral
|
24 (53)
|
12 (43)
|
9 (64)
|
3 (100)
|
|
Abnormal stapedius reflexd
| | | | |
|
Unilateral
|
5 (11)
|
3 (11)
|
2 (14)
|
0 (0)
|
|
Bilateral
|
27 (60)
|
16 (57)
|
8 (57)
|
3 (100)
|
|
Type of hearing loss
| | | | |
|
Conductive
|
15 (33)
|
12 (43)
|
3 (21)
|
0 (0)
|
|
Sensorineural
|
1 (2)
|
1 (4)
|
0 (0)
|
0 (0)
|
|
Mixed
|
8 (18)
|
1 (4)
|
4 (29)
|
3 (100)
|
- dB decibel
- aBased on PTA over 0.25, 0.5, 1, 2, 4, 6 and 8 kHz
- bBased on PTA over 0.5, 1, 2 and 4 kHz (BE PTA4)
- cDefined as Type B or C
- dAbsent or reduced contraction of the stapedius muscles
