From Office for National Statistics population data (2018) , British Deaf Association and The British Tinnitus Association
Adapted from British Society of Audiology
There are four different levels of hearing loss, defined by the quietest sound that people are able to hear, measured in decibels (dB).
Mild hearing loss: Hearing loss between 20 - 40 dB. This can sometimes make following speech difficult, particularly in noisy situations.
Moderate hearing loss: Hearing loss between 41 - 70 dB. People may have difficulty following speech without hearing aids.
Severe hearing loss: Hearing loss between 71 - 95 dB. People will have severe difficulty following speech.
Profound deafness: Hearing loss over 95dB+. People usually need to lipread and/or use sign language and/or use cochlear implants/hearing aids.
However......It's not just about volume
Deafness is rarely spread evenly across the range of frequencies used in speech. So deafness is not simply a matter of volume.
One of the most common types of deafness is the loss of high frequencies, which makes it difficult to hear consonant sounds like S T K P and female voices.
Vowel sounds (A E I O U) have low frequency. So if someone has low frequency deafness vowel sounds will be difficult to hear as well as male voices.
Adapted from Wright Communication Learning Material
However… remember that all of these ‘labels’ are flexible and depend on how someone identifies themself. They may also change their preferred terminology and communication preference over time.
D/deaf and HoH patients often leave a consultation confused about their treatment and/or medication and many find communicating with healthcare professionals problematic. Such difficulties lead to high rates of missed appointments and the avoidance of healthcare services leading to poorer mental and physical health when compared to hearing people.
Follow the links below to find out more about deaf and hard of hearing health:
Deafness May Damage your Health (The Lancet):
National Deaf Services provides a range of comprehensive mental health services for deaf adults, children and their families:
Sick of It Report (about the Deaf communities health)
Coronavirus Impacts Report (about how the pandemic has impacted D/deaf people)
Important fact - Around only 30% of English is lip readable on the mouth.
Making it easier for people to lip-read you.
Checking understanding.
Examination.
Additional points when communicating with BSL user.
Types of Language Service Professionals.
Interpreter: an interpreter has an advance level of signing and receptive skills and interprets British Sign Language into spoken English and vice versa.
Communication support worker (CSW): a CSW is similar to an interpreter but with a lesser degree of Sign Language qualifications and training. Communicators usually work in schools, colleges and universities but shouldn’t be used in a medical environment.
Lipspeaker: a lipspeaker silently repeats all that is being said in a clear manner to the lipreader, and sometimes uses fingerspelling.
Speech to Text professional: An STTR professional translates spoken English into written text using a small laptop screen which can also be relayed to a large screen for the deaf person to read.
Notetaker: a notetaker manually writes the spoken word into an understandable note form for Deaf/deaf people.
Points to Consider when Working with a BSL Interpreter.
If your interpreting provider cannot locate a qualified interpreter try:
Charities.
Technology and assistive devices for deaf people.
Communication Support/Language Service Professionals.
Learning British Sign Language.