Table 6.
Summary of standard deviations of the hearing threshold in decibels for participants with normal hearing in the literature.
| Study | N | Hearing threshold (dB), SD | Mean SD | ||||||||
|
|
|
125 Hz | 250 Hz | 500 Hz | 1k Hz | 2k Hz | 4k Hz | 6k Hz | 8k Hz |
|
|
| Taylor et al, 1967 [24] |
|
|
|
|
|
|
|
|
|
|
|
|
|
18-24 years | 46 | 4.6 | 4.1 | 3.9 | 3.5 | 3.3 | 4.1 | 4.7 | 4.6 | 4.1 |
|
|
25-34 years | 33 | 4.8 | 4.3 | 3.9 | 3.8 | 4.5 | 4.3 | 4.8 | 5.1 | 4.4 |
| Robinson, Sutton, 1979 [19] a |
|
|
|
|
|
|
|
|
|
|
|
|
|
Men | 1636 | 6.6 | 6.1 | 5.6 | 5.6 | 6.6 | 7.8 | 8.9 | 9.9 | 7.1 |
|
|
Women | 1578 | 6.1 | 5.6 | 5.6 | 5.6 | 6.1 | 7.2 | 8.2 | 9.8 | 6.8 |
| Arlinger, 1982 [21] | 10 |
|
|
7.8 | 5.2 | 7.4 | 6.5 | 7.4 | 7.6 | 7.0 | |
| Arlinger, 1991 [25] | 30 | 5.7 | 5.2 | 5.0 | 4.9 | 4.6 | 5.1 | 6.7 | 6.1 | 5.4 | |
| Lutman, Davis, 1994 [26] | 241 |
|
4.2 | 4.4 | 4.2 | 4.6 | 6.9 | 7.8 | 7.9 | 5.7 | |
| Han, Poulsen, 1998 [27] | 31 |
|
4.7 | 4.4 | 3.5 | 4.9 | 6.6 | 6.3 | 7.1 | 5.4 | |
| Johansson, 2002 [23] b |
|
|
|
|
|
|
|
|
|
|
|
|
|
Men | 266 | 5.7 | 5.5 | 5.5 | 5.4 | 5.6 | 6.7 | 7.0 | 7.5 | 6.1 |
|
|
Women | 337 | 5.5 | 5.2 | 4.8 | 4.5 | 5.2 | 7.9 | 7.4 | 6.1 | 5.8 |
| Engdahl et al, 2005 [22] c |
|
|
|
|
|
|
|
|
|
|
|
|
|
Men | 3587 |
|
7.6 | 5.7 | 5.3 | 7.0 | 8.9 | 9.5 | 8.0 | 7.4 |
|
|
Women | 1840 |
|
6.3 | 5.8 | 5.3 | 5.7 | 7.0 | 9.1 | 7.6 | 6.7 |
| Current study | 25 | 5.9 | 6.1 | 5.0 | 4.2 | 4.9 | 5.6 | 8.0 | 9.1 | 6.1 | |
aEstimated on the basis of the model for the age of 25 years, consistent with ISO 7029, 2000 [20].
bEstimated on the basis of centiles calculated from the model for the age of 25 years.
cEstimated on the basis of centiles in the age range 20-29 years.