High Prevalence of Hearing Loss at the Special Olympics: Is This Representative of People with Intellectual Disability?

Effectiveness and costs of a low-threshold hearing screening programme (HörGeist) for individuals with intellectual disabilities: protocol for a screening study

INTRODUCTION

Individuals with intellectual disabilities (ID) often suffer from hearing loss, in most cases undiagnosed or inappropriately treated. The implementation of a programme of systematic hearing screening, diagnostics, therapy initiation or allocation and long-term monitoring within the living environments of individuals with ID (nurseries, schools, workshops, homes), therefore, seems beneficial.

METHODS AND ANALYSIS

The study aims to assess the effectiveness and costs of a low-threshold screening programme for individuals with ID. Within this programme 1050 individuals with ID of all ages will undergo hearing screening and an immediate reference diagnosis in their living environment (outreach cohort). The recruitment of participants in the outreach group will take place within 158 institutions, for example, schools, kindergartens and places of living or work. If an individual fails the screening assessment, subsequent full audiometric diagnostics will follow and, if hearing loss is confirmed, initiation of therapy or referral to and monitoring of such therapy. A control cohort of 141 participants will receive an invitation from their health insurance provider via their family for the same procedure but within a clinic (clinical cohort). A second screening measurement will be performed with both cohorts 1 year later and the previous therapy outcome will be checked. It is hypothesised that this programme leads to a relevant reduction in the number of untreated or inadequately treated cases of hearing loss and strengthens the communication skills of the newly or better-treated individuals. Secondary outcomes include the age-dependent prevalence of hearing loss in individuals with ID, the costs associated with this programme, cost of illness before-and-after enrolment and modelling of the programme's cost-effectiveness compared with regular care.

ETHICS AND DISSEMINATION

The study has been approved by the Institutional Ethics Review Board of the Medical Association of Westphalia-Lippe and the University of Münster (No. 2020-843 f-S). Participants or guardians will provide written informed consent. Findings will be disseminated through presentations, peer-reviewed journals and conferences.

TRIAL REGISTRATION NUMBER

DRKS00024804.

Global Data on Ear and Hearing Screening in an Intellectual Disability Population

Intellectual disability (ID) and hearing loss are frequent comorbid conditions, although otological problems often go unnoticed until picked up by screening. In the hearing program of Special Olympics (SO), athletes with ID are screened for otological problems. By retrospective analysis of all SO meetings between 2007 and 2017, more than 100,000 screenings could be included. Cerumen impaction was found in 40.7%, middle ear problems in 29.5% of those who failed hearing screening, and hearing loss confirmation in 26.9%. Prevalences for different world regions and country income groups are provided. The results emphasize the high prevalence of hearing loss in this ID population. Awareness among health care workers and active screening are required to reduce health disparities among this disadvantaged population.

Outcome of 10 years of ear and hearing screening in people with intellectual disability in Europe: A multicentre study

BACKGROUND

Undetected ear and hearing problems negatively impact the quality of life of people with intellectual disability.

METHODS

This multicentre retrospective study describes the outcome of 10 years of ear and hearing screening in athletes with intellectual disability in seven European countries. The screening was conducted by a trained team using a strictly standardised protocol.

RESULTS

Of 15,363 screened athletes with intellectual disability, more than half (58.7%) needed referral for ear and/or hearing problems, ranging from 51.7% (<20 years old) to 81.4% (≥60 years old). The most commonly detected conditions were excessive/impacted earwax (40.3%), middle ear problems (30.1%) and hearing loss (27.0%), with significant differences between age groups and countries.

DISCUSSION

This study demonstrates an increased risk of ear and hearing problems in people with intellectual disability as compared to the general population. Considering the unawareness and impact of these problems, it is highly recommended to organise systematic screening. Follow-up for diagnostic elaboration, therapeutic management and long-term guidance should be provided.

Vestibular function in adults with intellectual disabilities: feasibility and outcome of a vestibular screening protocol in Special Olympics athletes

OBJECTIVE

This study aimed to evaluate the feasibility of a well-adapted vestibular screening battery to objectively examine the (peripheral) vestibular function, and to explore the characteristics of potential vestibular deficits in the adult ID population.

DESIGN

Cross-sectional study design.

STUDY SAMPLE

Compared to an age- and gender-weighted control group, a heterogeneous group of forty-five adults with ID participated in the vestibular screening at the National Games of Special Olympics Belgium (2019), which consisted of a bone conduction cervical Vestibular Evoked Myogenic Potential (cVEMP) measurement and video Head Impulse Test (vHIT).

RESULTS

The screening battery appeared to be feasible in the majority of the participants (cVEMP: 92%; vHIT: 72%). Overall, the occurrence of abnormal cVEMP and vHIT responses was significantly higher in the ID group, with significantly lower corrected peak-to-peak cVEMP amplitudes (p < 0.001), lower vHIT gains (p < 0.001), and higher cVEMP and vHIT asymmetry ratios in the ID group (p = 0.008 and p < 0.001 resp.).

CONCLUSIONS

Vestibular assessment using the cVEMP and vHIT technique shows a promising feasibility in adults with ID. In addition, this study suggests that people with ID exhibit an increased prevalence of (peripheral) vestibular deficits relative to the general population.

Dual sensory impairment among a cohort of older adults living in Ireland: A nested case-control study of the Irish Longitudinal Study on Ageing cohort

Background: Little information is available on the implications of hearing loss, visual impairment and dual sensory impairment among older adults with an intellectual disability (ID) living in Ireland and this paper aims to address the health concerns associated with sensory impairment among this population.  Methods: A representative sample of 753 persons aged 40 years and older at all levels of ID and full range of residential circumstances from the Intellectual Disability Supplement to the Irish Longitudinal Study on Ageing (IDS-TILDA) participants were matched with general older population TILDA participants on age, sex and geographic location within Ireland. Demographic data on samples included age, sex, visual impairment (yes/no), hearing impairment (yes/no) and dual sensory impairment (yes/no). For those with intellectual disability (ID) data was also gathered on level of intellectual disability, residence, needing assistance with activities of daily living (ADL) and instrumental activities of daily living, self-rated health, loneliness, doctor’s diagnosis of endocrine disease and of dementia and doctor’s report of two or more chronic health conditions. Bivariate analysis of associations between visual, hearing and dual sensory impairment with the measures of physical and mental health was completed and logistic regression analysis to generate adjusted odds ratios for associations between sensory impairment and physical and mental health conditions. Results: As compared to the matched general population participants, in participants with ID dual sensory impairment was more often associated with poor self-rated health, limitations with two or more ADLs, loneliness and multimorbidity. People with ID were 4.4 times more likely to be multimorbid if they were visually impaired compared with an odds ratio of 2.4 in TILDA participants. Conclusion: Previous studies found significant associations between hearing and visual impairment among older populations. Analysis here also suggests the burden of sensory impairment increases both with ID and then with level of ID