Meeting the educational needs of children with hearing loss

Association between blood volatile organic aromatic compound concentrations and hearing loss in US adults

OBJECTIVE

Benzene, ethylbenzene, meta/para-xylene, and ortho-xylene, collectively referred to as benzene, ethylbenzene, and xylene (BEX), constitute the main components of volatile organic aromatic compounds (VOACs) and can have adverse effects on human health. The relationship between exposure to BEX and hearing loss (HL) in the adult U.S. population was aimed to be assessed.

METHODS

Cross-sectional data from the National Health and Nutrition Examination Survey (NHANES) for the years 2003-2004, 2011-2012, and 2015-2016 were analyzed. This dataset included complete demographic characteristics, pure-tone audiometry measurements, and volatile organic compound detection data from the NHANES database. A weighted multivariate logistic regression model was employed to investigate the associations between blood BEX concentrations HL, low-frequency hearing loss (SFHL), and high-frequency hearing loss (HFHL).

RESULTS

2174 participants were included, with weighted prevalence rates of HL, SFHL, and HFHL being 46.81%, 25.23%, and 45.86%, respectively. Exposure to benzene, ethylbenzene, meta/para-xylene, and ortho-xylene, and cumulative BEX concentrations increased the risk of hearing loss (odds ratios [ORs] were 1.36, 1.22, 1.42, 1.23, and 1.31, respectively; all P < 0.05). In the analysis with SFHL as the outcome, ethylbenzene, m-/p-xylene, o-xylene, benzene, and overall BEX increased the risk (OR 1.26, 1.21, 1.28, 1.20, and 1.25, respectively; all P < 0.05). For HFHL, exposure to ethylbenzene, m-/p-xylene, o-xylene, benzene, and overall BEX increased the risk (OR 1.36, 1.22, 1.42, 1.22, and 1.31, respectively; all P < 0.05).

CONCLUSION

Our study indicated that a positive correlation between individual or cumulative exposure to benzene, ethylbenzene, meta/para-xylene, and ortho-xylene and the risk of HL, SFHL, and HFHL. Further research is imperative to acquire a more comprehensive understanding of the mechanisms by which organic compounds, notably BEX, in causing hearing loss and to validate these findings in longitudinal environmental studies.

Self-esteem among Individuals with Hearing Loss: A Systematic Review

Purpose

Self-esteem is important for decision making, emotional health, and overall well-being. In individuals with hearing loss (HL), self-esteem may vary due to degree of HL, hearing devices, academic set-ups and communication strategies used by family members. This study aimed to systematically review the impact of hearing loss on self-esteem.

Method

A systematic search was conducted to identify the studies focusing on self-esteem of the individuals with HL. Four electronic databases, PubMed, Scopus, Embase, and CINAHL, were used. Title screening and abstract reading were performed by two independent authors. Appropriate studies were considered for full-length reading. The references of the obtained articles were manually searched to identify eligible studies. A mixed-methods appraisal tool was used to critically appraise the included studies.

Results

Out of 1219, twelve studies met the inclusion criteria. Individuals with HL exposed to total communication had a positive impact on self-esteem. Interestingly, hearing competence of parents and siblings was linked with their self-esteem. Children with HL have higher self-esteem than normal-hearing children. Children with HL attending mainstream schooling and using cochlear implants had positive and higher self-esteem. Further, higher education level, employment, and marital status were effectively associated with self-esteem.

Conclusion

Positive self-esteem intensely improves mental and emotional well-being. Appropriate and timely provided rehabilitation accompanied by family support can induce healthier and more fulfilling social life. Additionally, healthy self-esteem can empower individuals with HL to engage in social activities diligently. To sum up, early intervention and family participation are required to improve overall quality of life.

Hearing Impairment and School Engagement Outcomes in US Children

Importance

Ensuring appropriate school engagement for deaf or hard of hearing (DHH) children in the US is important for improving their long-term outcomes as they grow into adults.

Objective

To examine the associations between hearing loss (HL), its sequelae (speech and/or language disorders, behavioral and/or conduct problems, and neuropsychiatric and/or learning disorders), and various school engagement measures among school-aged children in the US.

Design, Setting, and Participants

This cross-sectional study combined data from the nationally representative 2016-2021 National Survey of Children's Health. A total of 155 178 randomly selected children (weighted, approximately 49 340 700 children) aged 6 to 17 years with a parent or caregiver who responded to an address-based survey by mail or online were included. All analyses were weighted to account for the probability of selection and nonresponse and to reflect population-based estimates representative of all noninstitutionalized school-aged US children and adolescents residing in housing units.

Main Outcomes and Measures

Diverse school engagement measures, including extracurricular participation in sports, clubs, paid work, volunteer work, and organized lessons, as well as educational performance variables, including missed school days, not caring about doing well in school, not doing required homework, grade repetition, and parent or guardian contacted by school.

Results

Of the estimated 49 340 700 children aged 6 to 17 years (41.1% aged 6-10 years; 51.1% male; 54.7% without underrepresented minority status), an estimated 1.4% (95% CI, 1.2%-1.5%) were reported by their parent or guardian to have deafness or hearing problems. Having DHH status was associated with significantly worse outcomes on 8 of 10 school engagement measures (eg, participation in sports: adjusted odds ratio [AOR], 0.75 [95% CI, 0.60-0.93]; missed school days: AOR, 2.98 [95% CI, 2.21-4.00]), even after adjustment for age, sex, underrepresented minority status, highest educational level of parent or guardian, federal poverty level of the household, and primary language in the household. Moreover, although subgroup analyses of DHH children with and without HL sequelae revealed significant differences (speech and/or language disorder: AOR, 5.83 [95% CI, 4.31-7.89]; behavioral and/or conduct problem: AOR, 2.75 [95% CI, 2.10-3.60]; neuropsychiatric and/or learning disorder: AOR, 3.06 [95% CI, 2.39-3.91]), HL sequelae only partially mediated the associations between these disparities.

Conclusions and Relevance

In this cross-sectional study, DHH status itself may have been the primary factor directly associated with school engagement disparities. These findings suggest the need for greater emphasis on educational accommodations and support for hearing status itself, independent of the presence or absence of HL sequelae.

Knowledge and attitudes of school principals towards childhood hearing loss and hearing services: A cross-sectional survey to support the implementation of inclusive education in Samoa

Objectives

To assess the knowledge and attitudes among school principals towards childhood hearing loss and hearing services to support the implementation of inclusive education in Samoa. Educators are uniquely positioned to advocate for inclusive education in their classrooms, and may be among the first professionals to suspect hearing loss in their young students. Given the well-known impacts of childhood hearing loss on learning and development, educators therefore play a vital role in referring students for an ear and hearing health assessment.

Methods

A cross-sectional convenience sampling design and bilingual questionnaire were used (English/Samoan). School principals attending the annual conference for educators of Samoa over 4 days in June 2022 were invited to anonymously complete a 23-item questionnaire on childhood hearing loss and hearing services. Participants were required to respond to each statement with either 'yes', 'no' or 'unsure'. The questionnaire investigated general knowledge of healthy hearing and hearing loss, knowledge of causes and risk factors of hearing loss, knowledge of identification and intervention for hearing loss and the attitudes towards students with hearing loss.

Results

95.4% of the 109 participants agreed that healthy hearing is important, and 97.2% felt that childhood hearing loss is an important problem in Samoa. Participants agreed that hearing loss adversely impacts the interaction with peers (95.4%), listening in the classroom (94.5%), speech and language development (93.6%), classroom behaviour (88.1%) and reading skills (85.3%). 97.2% of participants felt that students with hearing loss should have the same opportunities as their normal-hearing counterparts, and 92.7% would include students with hearing loss in their classroom. 94.5% were keen to learn more about childhood hearing loss. There were no significant differences in response proportions between variable subgroups.

Conclusion

Overall, the results displayed high levels of knowledge and very positive attitudes among school principals in Samoa towards their students with hearing loss.

Modeling Lost to Intervention in Early Hearing Detection and Intervention: A Modified eDelphi Study

PURPOSE

The purpose of this study was to develop a functional model of the drivers behind why families may decline early intervention services following the identification of a child as D/deaf or hard of hearing.

METHOD

This model was developed using a modified eDelphi method. Invited experts (N = 155) were provided proposed models of why families may decline early intervention services in accordance with current literature. In the first phase of feedback, participants (n = 23) provided changes they would make to the model to be more in line with their perceptions of lost to intervention. These changes were implemented, and a second phase of feedback with participants (n = 25) moved to accept the model as presented.

RESULTS

Agreement was reached on five main barriers to early intervention access for children who have been identified as D/deaf or hard of hearing (family experience, family culture, perceived vulnerability, perceived benefits, and perceived barriers). Each of these main barriers has associated examples of how they may manifest across different early intervention programs and situations.

CONCLUSIONS

This is the first theoretical model of why loss to intervention happens within early hearing detection and intervention. Having a model provides the opportunity for future work to implement novel approaches to support families during the early intervention enrollment process.

Alcohol as a risk factor for hearing loss: A systematic review and meta-analysis

OBJECTIVE

Growing evidence suggests that alcohol consumption is a risk factor for hearing loss; however, the evidence has been inconsistent. This systematic review and meta-analysis aimed to evaluate the effect of alcohol consumption on hearing loss.

METHODS

We searched several databases up to November 2021, for published articles using the keywords "alcohol drinking" and "hearing loss". Two investigators independently conducted the study selection and data extraction. Based on the results of the heterogeneity analysis (Q statistic and I2 statistic), a fixed- or random-effects model was used to calculate the pooled odds ratios (ORs). Subgroup and sensitivity analyses were performed to assess the potential sources of heterogeneity and robustness of the pooled estimation. Publication bias in the literature was evaluated using Egger's test.

RESULTS

In total, 18 (9 cross-sectional, 5 case-control, and 4 cohort) observational studies were identified in this search; 27,849 participants were included. Compared with non-drinkers, the pooled OR of drinkers was 1.22 (95% confidence interval: 1.09-1.35).

CONCLUSION

Evidence suggests a positive association between alcohol consumption and hearing loss. Drinkers were at a higher risk than non-drinkers. Drinking limitations may be useful for preventing hearing loss.

School Hearing Screening With a Portable, Tablet-Based, Noise-Attenuating Audiometric Headset in Rural Nicaragua

OBJECTIVE

To investigate the utility and effectiveness of a noise-attenuating, tablet-based mobile health system combined with asynchronous telehealth evaluations for screening rural Nicaraguan schoolchildren for hearing loss.

STUDY DESIGN

Prospective population-based survey.

SETTING

Rural Nicaraguan communities.

PATIENTS

There were 3,398 school children 7 to 9 years of age.

INTERVENTIONS

Diagnostic automated and manual audiometry, detailed asynchronous telehealth evaluations.

MAIN OUTCOME MEASURES

Referral rates, ambient noise levels, and audiometric results as well as hearing loss prevalence, types, and risk factors.

RESULTS

Despite high ambient noise levels during screening (46.7 dBA), no effect of noise on referral rates on automated audiometry or confirmatory manual audiometry in those who failed automated testing was seen. The overall audiometric referral rate was 2.6%. Idiopathic sensorineural hearing loss (SNHL) and cerumen impaction were the most common types of hearing loss in this population with an estimated prevalence of hearing loss (all types) of 18.3 per 1,000 children. SNHL was associated with both drug exposure during pregnancy (p = 0.04) and pesticide exposure in the home (p = 0.03).

CONCLUSION

Hearing screening using a tablet-based, noise-attenuating wireless headset audiometer is feasible and effective in rural low-resource environments with moderately elevated ambient noise levels. The referral rate with noise-attenuating headsets was much lower than that previous reports on this population. In addition, manual audiometry resulted in much lower referral rates than automated audiometry. The confirmed hearing loss rate in this study is comparable to reports from other low-income countries that use some form of noise attenuation during screening. Pesticide exposure and drug exposure during pregnancy are potential causes of SNHL in this population.

Interactive Effects of Temperament and Family-Related Environmental Confusion on Spoken Language in Children Who Are Deaf and Hard of Hearing

PURPOSE

The aim of this study was to examine the influence of caregivers' reports of family-related environmental confusion-which refers to the level of overstimulation in the family home environment due to auditory and nonauditory (i.e., visual and cognitive) noise-on the relation between child temperament and spoken language outcomes in children who are deaf and hard of hearing (DHH) in comparison to age-matched children with typical hearing (TH).

METHOD

Two groups of families with children between 3 and 7 years of age (TH = 59, DHH = 58) were sequentially recruited from a larger longitudinal study on developmental outcomes in children who are DHH. Caregivers (all TH) completed questionnaires measuring three dimensions of child temperament (i.e., effortful control, negative affectivity, and surgency-extraversion) and family-related environmental confusion. A norm-referenced language measure was administered to children. Testing took place within the families' homes.

RESULTS

For children who are DHH, effortful control was positively related to spoken language outcomes, but only when levels of family-related environmental confusion were low to moderate. Family-related environmental confusion did not interact with temperament to influence spoken language in children with TH.

CONCLUSIONS

Homes with low-to-moderate levels of environmental confusion provide an environment that supports DHH children with better effortful control to harness their self-regulatory skills to achieve better spoken language comprehension than those with lower levels of effortful control. These findings suggest that efforts to minimize chaos and auditory noise in the home create an environment in which DHH children can utilize their self-regulatory skills to achieve optimal spoken language outcomes.

Community health workers and mHealth systems for hearing screening in rural Nicaraguan schoolchildren

Background

We aimed to investigate the effectiveness of using minimally trained community health workers (CHW) to screen schoolchildren in rural Nicaragua for hearing loss using a tablet-based audiometric system integrated with asynchronous telehealth evaluations and mobile health (mHealth) appointment reminders.

Methods

A population-based survey was conducted using community health workers (CHWs) to perform tablet-based audiometry, asynchronous telehealth evaluations, and mHealth reminders to screen 3398 school children (7-9 years of age) in 92 rural Nicaraguan communities. The accuracy of screening, test duration, testing efficiency, telehealth data validity, and compliance with recommended clinic visits were analyzed.

Results

Minimally trained CHWs successfully screened children within remote rural schools with automated audiometry (test duration = 5.8 minutes) followed by manual audiometry if needed (test duration = 4.3 minutes) with an estimated manual audiometry validity of 98.5% based on a review of convergence patterns. For children who were referred based on audiometry, the otoscopy and tympanometry obtained during telehealth evaluations were high quality (as reviewed by 3 experts) in 44.6% and 80.1% of ears, respectively. A combination of automated short message service (SMS) text messages and voice reminders resulted in a follow-up compliance of 75.2%. No families responded to SMS messages alone.

Conclusions

Tablet-based hearing screening administered by minimally trained CHWs is feasible and effective in low- and middle-income countries. Manual audiometry was as efficient as automated audiometry in this setting. The physical exam tasks of otoscopy and tympanometry require additional training. Mobile phone messages improve compliance for confirmatory audiometry, but the utility of SMS messaging alone is unclear in this population.

Hearing disability and employment: a population-based analysis using the 2017 Canadian survey on disability

Purpose: The objectives of this study were to determine the effects of hearing disability on employment rates; examine how various factors are associated with employment; and identify workplace accommodations available to persons with hearing disabilities in Canada.Material and methods: A population-based analysis was done using the data collected through the 2017 Canadian Survey on Disability (CSD), representing 6 million (n = 6 246 640) Canadians. A subset of the complete dataset was created focusing on individuals with a hearing disability (n = 1 334 520). Weighted descriptive and multivariate logistic regression analyses were performed.Results: In 2017, the employment rates for working-age adults with a hearing disability were 55%. Excellent general health status (OR: 3.37; 95% CI: 2.29-4.96) and daily use of the internet (OR: 2.70; 95% CI: 1.78-4.10) had the highest positive effect on the employment rates. The top three needed but least available accommodations were communication aids (16%), technical aids (19%), and accessible parking/elevator (21%).Conclusion: Employment rates for persons with a hearing disability are lower than the general population in Canada. Employment outcomes are closely associated with one's general health and digital skills. Lack of certain workplace accommodations may disadvantage individuals with a hearing disability in their employment.Implications for RehabilitationPeople with severe hearing disabilities and those with additional disabilities may need additional and more rigorous services and supports to achieve competitive employment.It is important for the government to improve efforts toward inclusive education and develop strategies that promote digital literacy for job seekers with hearing disabilities.Officials concerned with implementing employment equity policies in Canada should focus on finding strategies that enable employees to have supportive conversations with their employers regarding disability disclosure and obtaining required accommodations.

Global return on investment and cost-effectiveness of WHO's HEAR interventions for hearing loss: a modelling study

Background

To address the growing prevalence of hearing loss, WHO has identified a compendium of key evidence-based ear and hearing care interventions to be included within countries’ universal health coverage packages. To assess the cost-effectiveness of these interventions and their budgetary effect for countries, we aimed to analyse the investment required to scale up services from baseline to recommended levels, and the return to society for every US$1 invested in the compendium.

Methods

We did a modelling study using the proposed set of WHO interventions (summarised under the acronym HEAR: hearing screening and intervention for newborn babies and infants, pre-school and school-age children, older adults, and adults at higher risk of hearing loss; ear disease prevention and management; access to technologies such as hearing aids, cochlear implants, or hearing assistive technologies; and rehabilitation service provision), which span the life course and include screening and management of hearing loss and related ear diseases, costs and benefits for the national population cohorts of 172 countries. The return on investment was analysed for the period between 2020 and 2030 using three scenarios: a business-as-usual scenario, a progress scenario with a scale-up to 50% of recommended coverage, and an ambitious scenario with scale-up to 90% of recommended coverage. Using data for hearing loss burden from the Global Burden of Disease Study 2019, a transition model with three states (general population, diagnosed, and those who have died) was developed to model the national populations in countries. For the return-on-investment analysis, the monetary value of disability-adjusted life-years (DALYs) averted in addition to productivity gains were compared against the investment required in each scenario.

Findings

Scaling up ear and hearing care interventions to 90% requires an overall global investment of US$238·8 billion over 10 years. Over a 10-year period, this investment promises substantial health gains with more than 130 million DALYs averted. These gains translate to a monetary value of more than US$1·3 trillion. In addition, investment in hearing care will result in productivity benefits of more than US$2 trillion at the global level by 2030. Together, these benefits correspond to a return of nearly US$15 for every US$1 invested.

Interpretation

This is the first-ever global investment case for integrating ear and hearing care interventions in countries’ universal health coverage services. The findings show the economic benefits of investing in this compendium and provide the basis for facilitating the increase of country's health budget for strengthening ear and hearing care services.

Funding

None.

Mothers view about oral health status, oral hygiene behaviors, and dental services utilization of their children with hearing impairment attending special schools

AIM

Parents are the principal decision-makers regarding their child's health. Awareness of mothers' view about their children's health, particularly with special health care needs (SHCN) (include hearing impaired children), is essential for health care providers. Therefore, the present study aimed to assess the mothers view about oral health status, oral hygiene practices, and dental services utilization of their children with hearing impairment attending special schools.

METHODS

A cross-sectional study was conducted between May and September 2020 among mothers of students with hearing impairment attending special schools. Also, the telephone structured interview was used to gathering mothers view.

RESULTS

57.4% of the mothers rated their children's oral health status as excellent or good, 27.9% as moderate, and 14.7% as poor. About half of the mothers (49.2%) stated that their children used toothbrushes once daily, and 15% use dental floss. Also, 54% of the children visited the dentist before this survey's conduct.

CONCLUSION

The findings of the present study suggest that children with hearing impairment can also have good oral health status and behaviors. These results may be attributed to the fact that the study sample was taken from two special schools. Also, only the mothers' perception assessment of students' oral health status was done. Further studies are required to increase the strength of evidence.

Ear and Hearing Care Workforce: Current Status and its Implications

OBJECTIVE

This study aimed to provide comprehensive global evidence on the availability of ear and hearing care (EHC) professionals and real-life examples that showcase the impact of workforce shortages on the workload faced by existing professionals.

METHODS

Six sources of data were used to estimate availability of EHC workforce: a scoping literature review, World Health Organization (WHO) National Health Workforce Accounts platform, WHO Member States survey and regional consultations, hearing care organizations survey, and official government statistics. EHC professionals' workload undertaking common interventions was estimated through the WHO workload indicators of staffing need human resource management tool.

RESULTS

With data on otolaryngologists from 138, audiologists from 102, speech and language therapists from 124, and teachers of the deaf from 86 countries, this study revealed large gaps in availability of EHC cadres. The majority of countries in the African region had less than one professional in each cadre per million in comparison with most European countries having up to 50 times higher densities. Workload indicators of staffing need calculations revealed the challenging workload faced by existing EHC professionals, with ratios between existing and required staff of 0.01-0.86.

CONCLUSION

There is an enormous shortage of EHC professionals and urgent actions are needed to ensure sufficient and equitable access to services. Task sharing, a novel approach for improving access to hearing care alongside the development of new cadres, can be a vital strategy in overcoming the shortage of highly qualified providers in many settings, even in well-resourced health systems, to facilitate equitable access to required EHC services.