|Mild hearing loss||21 - 40 dB (under BSA review)|
|Moderate hearing loss||41 - 70 dB|
|Severe hearing loss||71 - 95 dB|
|Profound hearing loss||in excess of 95dB|
|Type of loss:||
||qualified by (as appropriate)|
bilateral, unilateral, symmetrical, high frequency, low frequency
|Age of onset:||
||Further comment if appropriate|
eg progressive, fluctuating, sudden, traumatic
For the purpose of this document these descriptors are based on the average hearing threshold levels at 250, 500, 1000, 2000, 4000 Hz in the better ear. If no response is obtained at any frequency due to severity of impairment, the reading should be given a value of 130 dBHL assuming an audiometer maximum output of 130 dB. Similarly any hearing threshold level better than 0 dBHL shall be given the value of 0 dBHL. Averages do not imply any particular configuration and additional qualifications can be made.
These descriptors and calculations are as recommended by the British Society of Audiology and endorsed by the British Association of Teachers of the Deaf.
|British Society of Audiology (2011, amended 2012, 2015, 2016)
Recommended Procedure: Pure-tone air-conduction and bone-conduction threshold audiometry with and without masking, page 22; recommended format for audiogram forms, page 24.
|British Society of Audiology ‘Recommended procedures’
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