Hearing-impaired prevalence

Having a diminished defective sense of hearing, but not deaf is known as hard of hearing or a hearing impaired. Permanent childhood hearing impairment can have a devastating impact on communication skills, educational attainment, and quality of life with a high cost to society. Universal neonatal hearing screening has the potential to reduce the age at confirmation of congenital impairments. However, not all hearing impairments manifest themselves at birth, and screening programmes must be complemented by services that can confirm and manage cases where impairment first shows itself postnatal. No national register of hearing-impaired children exists for the United Kingdom, and accurate estimates of the prevalence of permanent childhood hearing impairment and of its profile across age and degree of impairment are unavailable. Such estimates at a time when pediatric audiology services in the United Kingdom are being transformed by the introduction of universal neonatal hearing screening and the modernization of hearing aid services. Previous studies of the prevalence of permanent childhood hearing impairment display two limitations. Firstly, they ascertained relatively small samples and so did not define the relation between prevalence, age, and degree of impairment precisely. Secondly, they did not estimate the extent of under ascertainment. We examined these issues by estimating prevalence from a total ascertainment of hearing impaired children in the United Kingdom and by employing capture-recapture analysis to adjust for under ascertainment. We estimated the prevalence of confirmed cases of permanent hearing impairment, including congenital, late onset, and acquired cases. Capture-recapture can correct for under ascertainment of confirmed cases. It does not discover cases that have not been confirmed.


The prevalence of permanent childhood hearing impairment rises over a wider age range and to a higher plateau than has been reported previously. In our study data collection relied on notifications from professionals in health and education, not all of who responded. However, geographical coverage was comprehensive, and the relation of our results to previously reported prevalence rates indicates that our methods of ascertainment were reliable.


In the United Kingdom the prevalence of confirmed cases of permanent childhood hearing impairment has raised with age to a significantly higher plateau than previous studies have estimated. These additional children would comprise some with congenital impairments who either miss neonatal hearing screening or pass the screening despite having a hearing impairment, some who acquire impairment postnatal, and others who manifest late onset or progressive impairments. Pediatric audiology and associated services will need the capacity and skills to identify and then confirm impairments in these children.

Hearing amplifier
Hearing amplifier allows you to stop straining from hearing the words while sitting at the back of the room or watching TV with the sound on low. The Super Ear Wireless Listening Device is a real breakthrough in sound magnification technology. One...

Resound hearing aids
The Resound hearing aids are available in behind-the-ear, in-the-ear and in-the-canal styles. Both behind the ear and in the canal is available with two memories (one memory for "quiet" listening and the other for more "noisy" listening conditions)...

Siemens hearing aids
Siemens hearing aids is the world's first hearing system featuring hearing devices that 'talks' to each other. It is a breakthrough system featuring synchronized hearing instruments will offer improved hearing for millions of Britons who suffer from...

© hearing.tdrbizl.com 2006