Hearing Aid Use in Nursing Homes, Part 2: Barriers to Effective Utilization of Hearing Aids

Capabilities, opportunities and motivations of staff to provide hearing support to long-term care home residents with dementia

OBJECTIVE

Many long-term care home (LTCH) residents have dementia and hearing loss, causing communication difficulties and agitation. Residents rely on staff for hearing support, but provision is often inconsistent. This study used the Behaviour Change Wheel's Capability, Opportunity and Motivation model to understand why LTCH staff do or do not, provide hearing support to residents with dementia who they believe could benefit from it.

DESIGN

An online survey exploring hearing support provision, capabilities, opportunities, motivations and demographics. Data were analysed using descriptive statistics, within-participants ANOVA and multiple linear regression.

STUDY SAMPLE

165 LTCH staff.

RESULTS

Staff provided hearing support to 50% of residents with dementia who they thought would benefit. Self-reported physical and psychological capabilities (skills/knowledge) were significantly higher than physical opportunity (having time/resources). The physical capability was significantly higher than social opportunity (collaborative working) and reflective motivation (feeling motivated). Lower levels of hearing support provision were predicted by LTCH funding (private vs. local authority), job role (care assistant vs. nurse) and fewer physical opportunities.

CONCLUSIONS

Boosting capabilities through training alone may not be as effective as increasing opportunities via environmental restructuring. Opportunities may include strengthening working relationships with audiologists and ensuring hearing and communication aids are available within LTCHs.

Interactive effects of hearing aid use and cognitive function in patients with hearing loss

BACKGROUND

There has been a significant increase in scientific investigations of the hearing-dementia association among the research on potentially modifiable risk factors for cognitive impairment. We tested two clinical questions. Analysis 1: does persistent hearing aid (HA) use decrease the decline in cognitive function caused by ageing? Analysis 2: does cognitive function at the time of HA fitting predict future persistent HA use?

METHODS

This case-control study performed at two referral centres reported data obtained over a 4.5-year period. We recruited a group of patients with cognitive decline, aged 65 or older with or without hearing loss. The intervention consisted of the use of HAs. The primary outcome measures were adherence to continuous HA use and cognitive function measured using the Japanese version of the Mini-Mental State Examination Test and the Reading Cognitive Test Kyoto.

RESULTS

Eighteen HA users and 18 controls were included in the first analysis. HA use was associated with a deceleration of cognitive decline 12 months later. In the second analysis, 11 participants with good adherence to HA use were compared with 12 participants who showed poor adherence to HA use. Among the variables employed in this study, cognitive function measured using the Reading Cognitive Test Kyoto was significantly lower in participants with poor adherence to HA.

CONCLUSIONS

HA use in cognitively impaired individuals with hearing loss can slow age-related cognitive decline. Cognitively impaired people with hearing loss who fail to commit to HA use tend to have lower cognitive measurement scores before HA fitting. HA use is generally more challenging as people age and their cognitive abilities decline. Therefore, it is desirable that HAs be used when hearing loss and dementia are in their early stages.

Hearing Aids and Quality of Life: A Psychological Perspective

Objective

This research assessed the relationship between hearing aid usage and quality of life in individuals with hearing impairment, exploring associated demographic and clinical factors.

Methodology

Data from 500 individuals at a tertiary care facility were collected over a year through medical records and an online questionnaire. Quality of life was gauged using WHOQOL-BREF and HHIE. Multiple linear regression analysed the correlation between hearing aid usage and quality of life, adjusting for age, gender, hearing loss severity, and socioeconomic factors.

Results

Descriptive statistics showed varying degrees of hearing impairment, socioeconomic status, hearing aid usage, and quality-of-life scores. Bivariate analyses found significant correlations between hearing impairment level, socioeconomic status, hearing aid usage, and quality of life. Linear regression highlighted a positive relationship between daily hearing aid usage duration and quality-of-life scores, even after adjusting for covariates. Variations in quality-of-life ratings were observed between hearing aid users and non-users, spanning different hearing loss levels and socioeconomic statuses. Subgroup analysis showed a positive correlation between hearing aid use and quality of life across age groups.

Conclusion

The study confirms the positive influence of hearing aids on the quality of life in hearing-impaired individuals, emphasizing the benefits of consistent use. Further studies should probe the specific domains and long-term adherence impacts.

Supplementary Information

The online version contains supplementary material available at 10.1007/s12070-023-04297-w.

Dementia and hearing-aid use: a two-way street

OBJECTIVES

Hearing-aid use may reduce risk of dementia, but cognitive impairment makes use more challenging. An observed association between reduced hearing-aid use and incident dementia could reflect either or both of these causal paths. The objective was to examine the effects of each path while minimising contamination between paths.

METHODS

Health records data from 380,794 Veterans who obtained hearing aids from the US Veterans Affairs healthcare system were analysed. Analysis 1 (n = 72,180) used multivariable logistic regression to model the likelihood of incident dementia 3.5-5 years post hearing-aid fitting for patients free of dementia and mild cognitive impairment (MCI). Analysis 2 (n = 272,748) modelled the likelihood of being a persistent hearing-aid user at 3 years 2 months after fitting, contrasting subgroups by level of cognitive function at the time of fitting. Analysis time windows were optimized relative to dataset constraints. Models were controlled for available relevant predictors.

RESULTS

The adjusted OR for incident dementia was 0.73 (95% CI 0.66-0.81) for persistent (versus non-persistent) hearing-aid users. The adjusted OR for hearing-aid use persistence was 0.46 (95% CI 0.43-0.48) in those with pre-existing dementia (versus those remaining free of MCI and dementia).

CONCLUSION

Substantial independent associations are observed in both directions, suggesting that hearing-aid use decreases risk of dementia and that better cognitive function predisposes towards persistent use. Research studying protective effects of hearing-aid use against dementia needs to account for cognitive status. Clinically, hearing devices and hearing care processes must be accessible and usable for all, regardless of their cognitive status.

Alternative Designs for Testing Speech, Language, and Hearing Interventions: Cluster-Randomized Trials and Stepped-Wedge Designs

PURPOSE

Individual-randomized trials are the gold standard for testing the efficacy and effectiveness of drugs, devices, and behavioral interventions. Health care delivery, educational, and programmatic interventions are often complex, involving multiple levels of change and measurement precluding individual randomization for testing. Cluster-randomized trials and cluster-randomized stepped-wedge trials are alternatives where the intervention is allocated at the group level, such as a clinic or a school, and the outcomes are measured at the person level. These designs are introduced along with the statistical implications of similarities among individuals within the same cluster. We also illustrate the parameters that have the most impact on the likelihood of detecting intervention effects, which must be considered when planning these trials.

CONCLUSION

Cluster-randomized and stepped-wedge designs should be considered by researchers as experimental alternatives to individual-randomized trials when testing speech, language, and hearing care interventions in real-world settings.

"It's Huge, in a Way." Conflicting Stakeholder Priorities for Managing Hearing Impairment for People Living with Dementia in Residential Aged Care Facilities

OBJECTIVES

The aims of this study were to a) explore the impact of hearing impairment on people living with dementia in residential aged care facilities (RACFs) and b) investigate management of hearing impairment for this population.

METHODS

A descriptive qualitative approach, consisting of semi-structured interviews, was conducted with 23 participants across four stakeholder groups (audiologists, care staff, family members and individuals with dementia and hearing impairment living in RACFs).

RESULTS

Thematic analysis revealed an overarching theme of "different priorities for managing hearing impairment" that emerged from the data. Audiologists and care staff prioritized different practices for managing hearing impairment: audiologists emphasized hearing aids and care staff emphasized communication strategies. Care staff also identified that current management of hearing impairment was sub-optimal as they do not prioritize managing it.

CONCLUSIONS

Residents with dementia and hearing impairment living in RACFs are not receiving optimal hearing management. Further research is required to understand the factors that influence this.

CLINICAL IMPLICATIONS

Changes in practices of both care staff and audiologists are required to improve hearing impairment management for this population.

Cognitive decline, sensory impairment, and the use of audio-visual aids by long-term care facility residents

BACKGROUND

Hearing and vision impairments and the use of audio-visual aids are associated with cognitive decline in community-dwelling older people, but effects in long-term care facilities (LFCF) are unclear. We hypothesize that visual and hearing impairment are associated with cognitive decline and these relationships are mediated by using visual and hearing aids.

METHODS

Secondary data analysis of a longitudinal study was conducted in the 7 government-subsidized LTCF operated by one of the largest non-governmental organizations in Hong Kong using data between 2005 and 2016. Eligible residents were ≥ 60 years of age without severe cognitive impairment at baseline who had stayed in the facilities for more than 3 years. All variables were measured by using the Minimum Data Set-Resident Assessment Instrument Version 2.0, Hong Kong version. The outcome was cognitive decline. Predictors were visual and hearing impairments. Mediators were the use of visual and hearing aids. General linear models were employed to test the hypotheses.

RESULTS

Results for 2,233 residents were analyzed, with a mean age of 82.1 ± 8.2 years and a mean follow-up period of 4.4 ± 0.8 years. Results showed that those who had visual impairment (p = 0.004) and hearing impairments (p = 0.022) had a higher risk of cognitive decline. Using hearing aids (coefficient = 0.0186, p < 0.05) positively mediates the effect of hearing impairment on cognitive decline. Using visual aids (coefficient = -0.0881, p < 0.05) negatively mediates the effects of visual impairment on cognitive decline.

CONCLUSION

In LTCF, hearing and visual impairments are associated with a higher risk of cognitive decline. Hearing aids often-users were associated with a higher risk of cognitive decline. LTCF residents with visual impairment did not use visual aids. Use of visual aids demonstrated potential effects in slowing cognitive decline. A future study with a larger and more diverse sample with attention to quality of devices is proposed to confirm its effects.

Effectiveness of Hearing Rehabilitation for Care Home Residents With Dementia: A Systematic Review

OBJECTIVES

To report the effectiveness of, and barriers and facilitators to, hearing rehabilitation for care home residents with dementia.

DESIGN

Systematic review.

SETTING AND PARTICIPANTS

Care home residents with dementia and hearing loss.

METHODS

No restrictions on publication date or language were set and gray literature was considered. Eligible studies were critically appraised and presented via a narrative review.

RESULTS

Sixteen studies, most of low to moderate quality, were identified. Hearing rehabilitation, including hearing devices, communication techniques, and visual aids (eg, flashcards), was reported to improve residents' communication and quality of life and reduce agitation, with improvements in staff knowledge of hearing loss and job satisfaction. Residents' symptoms of dementia presented barriers, for example, losing or not tolerating hearing aids. Low staff prioritization of hearing loss due to time pressures and lack of hearing-related training for staff were further barriers, particularly for residents who required assistance with hearing devices. Adopting a person-centered approach based on residents' capabilities and preferences and involving family members facilitated hearing device use.

CONCLUSIONS AND IMPLICATIONS

Residents with dementia can benefit from hearing rehabilitation. Identifying and implementing efficient, individualized hearing rehabilitation is necessary for those with complex cognitive needs. Increased funding and support for the social care sector is required to address systemic issues that pose barriers to hearing rehabilitation, including time pressures, lack of training for staff and access to audiology services for residents.

Hearing and vision health for people with dementia in residential long term care: Knowledge, attitudes and practice in England, South Korea, India, Greece, Indonesia and Australia

OBJECTIVES

Up to 90% of people with dementia in long term care (LTC) have hearing and/or vision impairment. Hearing/vision difficulties are frequently under-recognised or incompletely managed. The impacts of hearing/vision impairment include more rapid cognitive decline, behavioural disturbances, reduced quality of life, and greater care burden. This research investigated LTC staff knowledge, attitudes and practice regarding hearing/vision care needs for residents with dementia.

METHODS

A survey of staff in LTC facilities in England, South Korea, India, Greece, Indonesia and Australia. Respondents used a five-point scale to indicate agreement or YES/NO response to questions regarding sensory-cognitive care knowledge (what is known); attitudes (what is thought); practice (what is done).

RESULTS

Respondents reported high awareness of hearing/vision care needs, although awareness of how to identify hearing/vison difficulties or refer for assessment was low. Most felt that residents were not able to use hearing/vision devices effectively due to poor fit, being poorly tolerated or lost or broken devices. A substantial minority of respondents reported low confidence in supporting use of assistive hearing/vision devices, with lack of training the main reason. Most staff did not undertake routine checking of hearing/vision devices, and it was rare for facilities to have designated staff responsible for sensory needs. Variation among countries was not significant after accounting for staff experience and having received dementia training.

CONCLUSIONS

There is a need to improve sensory support for people with dementia in LTC facilities internationally. Practice guidelines and training to enhance sensory-cognitive knowledge, attitudes and practice in professional care teams is called for.

Sensory Health for Residents with Dementia in Care Homes in England: A Knowledge, Attitudes, and Practice Survey

BACKGROUND

Most residents with dementia (RwD) in long-term care (LTC) facilities experience hearing and vision problems, yet these sensory deficits, which are associated with poor outcomes, are frequently under-recognized or incompletely managed.

OBJECTIVE

We investigated the knowledge, attitudes, and practice (KAP) of LTC facility staff in England regarding sensory-cognitive health of RwD.

DESIGN

A cross-sectional survey using self-administered online or mail-in questionnaires.

SETTING AND PARTICIPANTS

The study included 117 LTC facilities throughout England, involving 887 staff of different grades (managers, n=79; nurses/allied health professionals, n=160; care workers, n=648).

METHODS

Using a sampling frame of all LTC facilities nationwide, we included a stratified random selection of facilities, surveying staff regarding KAP of sensory-cognitive health. Analysis was descriptive, followed by a regression model for predictors of overall KAP capacity of staff, based on a Rasch analysis of survey items.

RESULTS

Staff of all grades reported high knowledge and awareness of sensory-health concerns amongst RwD, but training opportunities were infrequent and most front-line staff felt they lacked the skills necessary to support the use of hearing and vision aids. The most reported reason for poor use of hearing aids/glasses related to lack of maintenance and care procedures (ie, broken and lost devices), and poor adherence support (ie, not tolerating the devices). Staff willingness to receive training was high. Most managers reported that training in communication skills and "sensory-friendly" environments was not provided. Finally, higher overall KAP capacity of staff was predicted by smaller facility size and public, rather than private, facility type.

CONCLUSIONS AND IMPLICATIONS

Training and practice of sensory health care in RwD in LTC in England is lacking. To improve sensory-cognitive care for LTC RwD, there is a clear need for (1) practice recommendations and (2) multifaceted interventions that include staff training, tailored sensory support, and environmental modification.

Identifying and Managing Hearing and Vision Loss in Older People in Care Homes: A Scoping Review of the Evidence

BACKGROUND AND OBJECTIVES

Poor identification of sensory impairments in care homes can be due to multiple factors. This scoping review identifies and synthesizes the literature into the detection of hearing and vision loss in the care home environment, and the management of these sensory losses once identified.

RESEARCH DESIGN AND METHODS

A scoping review methodology was used to identify primary research of any design published from 1985 to September 2018. Six electronic databases were searched, and articles were also sourced from reference lists, relevant charity organizations and published experts.

RESULTS

Six electronic databases and multiple gray literature sources identified 51 articles for inclusion. The evidence confirmed that lack of knowledge in care home staff, poor management of assistive aids, unsuitable environment, lack of connections with optometrists and audiologists, underuse of effective screening tools, and the added complexity of assisting those with dementia are all barriers to effective practice. Conversely, flexible training programs, availability of a variety of assistive aids, simple screening tools, and adaptions to the environment are effective facilitators.

DISCUSSION AND IMPLICATION

This review acknowledges that the barriers to identification and management of hearing and vision loss in care homes are multifaceted and that collaboration of multiple stakeholders is required to implement change and improve the residents' ear and eye care. Recommendations are offered to support more effective service provision tailored to meet the needs of people with sensory impairments living in care homes, and this could subsequently improve best practice.

Correlates of Hearing Aid Use in UK Adults: Self-Reported Hearing Difficulties, Social Participation, Living Situation, Health, and Demographics

OBJECTIVES

Hearing impairment is ranked fifth globally for years lived with disability, yet hearing aid use is low among individuals with a hearing impairment. Identifying correlates of hearing aid use would be helpful in developing interventions to promote use. To date, however, no studies have investigated a wide range of variables, this has limited intervention development. The aim of the present study was to identify correlates of hearing aid use in adults in the United Kingdom with a hearing impairment. To address limitations in previous studies, we used a cross-sectional analysis to model a wide range of potential correlates simultaneously to provide better evidence to aid intervention development.

DESIGN

The research was conducted using the UK Biobank Resource. A cross-sectional analysis of hearing aid use was conducted on 18,730 participants aged 40 to 69 years old with poor hearing, based on performance on the Digit Triplet test.

RESULTS

Nine percent of adults with poor hearing in the cross-sectional sample reported using a hearing aid. The strongest correlate of hearing aid use was self-reported hearing difficulties (odds ratio [OR] = 110.69 [95% confidence interval {CI} = 65.12 to 188.16]). Individuals who were older were more likely to use a hearing aid: for each additional year of age, individuals were 5% more likely to use a hearing aid (95% CI = 1.04 to 1.06). People with tinnitus (OR = 1.43 [95% CI = 1.26 to 1.63]) and people with a chronic illness (OR = 1.97 [95% CI = 1.71 to 2.28]) were more likely to use a hearing aid. Those who reported an ethnic minority background (OR = 0.53 [95% CI = 0.39 to 0.72]) and those who lived alone (OR = 0.80 [95% CI = 0.68 to 0.94]) were less likely to use a hearing aid.

CONCLUSIONS

Interventions to promote hearing aid use need to focus on addressing reasons for the perception of hearing difficulties and how to promote hearing aid use. Interventions to promote hearing aid use may need to target demographic groups that are particularly unlikely to use hearing aids, including younger adults, those who live alone and those from ethnic minority backgrounds.

Giving permission to care for people with dementia in residential homes: learning from a realist synthesis of hearing-related communication

BACKGROUND

Managing hearing communication for residents living with hearing loss and dementia in long-term care settings is challenging. This paper explores how care can be effective in optimising hearing communication for residents living with dementia. We argue that the underlying notion of permission or authorisation allows care staff to do what they know will be effective in providing person-centred care that enhances hearing communication. The paper also indicates that this notion of permission can usefully be applied to other areas of care home practice.

METHODS

To address hearing-related communication in care homes, we conducted a realist synthesis (RS). As a theory-driven approach to reviewing literature, it also uses expert opinion to understand complex health situations. Using RS, we developed a theory surrounding the management of hearing-related communication in care homes. Applying formal processes to the literature search and data extraction, the analysis uncovered relevant mechanisms and contexts to help confirm, refute or refine our understanding of how hearing communication could be improved.

RESULTS

Forty-three papers were selected for the realist synthesis. The documents were analysed to construct five context-mechanism-outcome configurations (CMOCs). The CMOCs represent possible care interventions to optimise hearing-related communication in care homes for person living with dementia and hearing loss (PLWDHL). They include leadership promoting positive regard and empathy through person-centred care, communication training for staff, 'knowing the person' and relationship building for responsive awareness of residents' hearing needs, maintaining and monitoring hearing communication through care planning, and managing noise in the care home environment.

CONCLUSIONS

Leadership that provides appropriate training and resources is likely to enhance knowledge and skills, leading to staff feeling able and equipped to respond to the hearing-related communication needs of PLWDHL. Collaboration with local hearing services is likely to raise awareness of hearing loss among care home staff. Importantly, care staff require a sense of permission from leadership, to work with knowledge and autonomy in the interest of residents living with dementia and hearing loss.

Hearing Loss: Why Does It Matter for Nursing Homes?

Over the past decade, hearing loss has emerged as a key issue for aging and health. We describe why hearing loss may be especially disabling in nursing home settings and provide an estimate of prevalence using the Minimum Data Set (MDS v.3.0). We outline steps to mitigate hearing loss. Many solutions are inexpensive and low-tech, but require significant awareness and institutional commitment.

Hearing Loss and Cognitive-Communication Test Performance of Long-Term Care Residents With Dementia: Effects of Amplification

PURPOSE

The study aims were (a) to explore the relationship between hearing loss and cognitive-communication performance of individuals with dementia, and (b) to determine if hearing loss is accurately identified by long-term care (LTC) staff. The research questions were (a) What is the effect of amplification on cognitive-communication test performance of LTC residents with early- to middle-stage dementia and mild-to-moderate hearing loss? and (b) What is the relationship between measured hearing ability and hearing ability recorded by staff using the Resident Assessment Instrument-Minimum Data Set 2.0 (RAI-MDS; Hirdes et al., 1999)?

METHOD

Thirty-one residents from 5 long-term care facilities participated in this quasiexperimental crossover study. Residents participated in cognitive-communication testing with and without amplification. RAI-MDS ratings of participants' hearing were compared to audiological assessment results.

RESULTS

Participants' speech intelligibility index scores significantly improved with amplification; however, participants did not demonstrate significant improvement in cognitive-communication test scores with amplification. A significant correlation was found between participants' average pure-tone thresholds and RAI-MDS ratings of hearing, yet misclassification of hearing loss occurred for 44% of participants.

CONCLUSIONS

Measuring short-term improvement of performance-based cognitive communication may not be the most effective means of assessing amplification for individuals with dementia. Hearing screenings and staff education remain necessary to promote hearing health for LTC residents.

Managing age-related hearing loss: how to use hearing aids efficiently - a mini-review

Using hearing aids may contribute to better functioning in the everyday lives of hearing-impaired older individuals. We introduce an integrative concept for the efficient use of hearing aids that involves both satisfaction with, and behaviour towards, hearing aids. We review theoretical and empirical work on the predictors of the efficient use of hearing aids in everyday life. Furthermore, we contend that the use of hearing aids requires improved understanding of the variability of hearing demands within specific contexts of everyday life (e.g. conversation with family members, listening to music). The efficiency of hearing aid use thus depends on the fit of situational demands, personal resources, and the specific configuration of the hearing aid device. We propose an integrative person-environment-fit model that advances concepts of selection, optimisation, and compensation to hearing aid efficiency. We discuss the implications of this model for research and for practitioners in the field of gerontology.

Evaluating the use of an assistive listening device for communication efficiency using the Diapix task: a pilot study

OBJECTIVE

The present study aimed to investigate the effects of assistive listening device (ALD) use on communication efficiency in groups of elderly adults with and without hearing impairment during a structured language sampling task. The relationship between self-perceived hearing handicap and communication efficiency was also explored.

METHOD

Twenty-two subjects completed measures of hearing sensitivity, perceived hearing handicap, cognition, and a language sample. One half of the hearing-impaired participants and one half of the normal-hearing group were randomly assigned to use an ALD during a structured conversation task with a naïve partner.

RESULTS

The Hearing Loss/No ALD group had significantly more breakdowns than the Hearing Loss/With ALD group. Further, the Hearing Loss/With ALD group performed statistically similar to the two groups without hearing loss. For the normal-hearing groups as well as the Hearing Loss/No ALD group, self-perceived hearing handicap was significantly correlated with the number of communication breakdowns.

CONCLUSION

The results lent preliminary support for the use of ALDs in the management of hearing loss. A case for functional assessment of communication was made to better illuminate causes of perceived communication handicap in the aural rehabilitation of elderly persons with hearing impairment.

Why do people fitted with hearing aids not wear them?

Objective:

Age-related hearing loss is an increasingly important public health problem affecting approximately 40% of 55–74 year olds. The primary clinical management intervention for people with hearing loss is hearing aids, however, the majority (80%) of adults aged 55–74 years who would benefit from a hearing aid, do not use them. Furthermore, many people given a hearing aid do not wear it. The aim was to collate the available evidence as to the potential reasons for non-use of hearing aids among people who have been fitted with at least one.

Design:

Data were gathered via the use of a scoping study.

Study sample:

A comprehensive search strategy identified 10 articles reporting reasons for non-use of hearing aids.

Results:

A number of reasons were given, including hearing aid value, fit and comfort and maintenance of the hearing aid, attitude, device factors, financial reasons, psycho-social/situational factors, healthcare professionals attitudes, ear problems, and appearance.

Conclusions:

The most important issues were around hearing aid value, i.e. the hearing aid not providing enough benefit, and comfort related to wearing the hearing aid. Identifying factors that affect hearing aid usage are necessary for devising appropriate rehabilitation strategies to ensure greater use of hearing aids.

Consumer preferences for hearing aid attributes: a comparison of rating and conjoint analysis methods

Low utilization of hearing aids has drawn increased attention to the study of consumer preferences using both simple ratings (e.g., Likert scale) and conjoint analyses, but these two approaches often produce inconsistent results. The study aims to directly compare Likert scales and conjoint analysis in identifying important attributes associated with hearing aids among those with hearing loss. Seven attributes of hearing aids were identified through qualitative research: performance in quiet settings, comfort, feedback, frequency of battery replacement, purchase price, water and sweat resistance, and performance in noisy settings. The preferences of 75 outpatients with hearing loss were measured with both a 5-point Likert scale and with 8 paired-comparison conjoint tasks (the latter being analyzed using OLS [ordinary least squares] and logistic regression). Results were compared by examining implied willingness-to-pay and Pearson's Rho. A total of 56 respondents (75%) provided complete responses. Two thirds of respondents were male, most had sensorineural hearing loss, and most were older than 50; 44% of respondents had never used a hearing aid. Both methods identified improved performance in noisy settings as the most valued attribute. Respondents were twice as likely to buy a hearing aid with better functionality in noisy environments (p < .001), and willingness to pay for this attribute ranged from US$2674 on the Likert to US$9000 in the conjoint analysis. The authors find a high level of concordance between the methods-a result that is in stark contrast with previous research. The authors conclude that their result stems from constraining the levels on the Likert scale.

Medical care in the nursing home

With the advent of the graying of the baby boomers, there is an urgent need to enhance care in the nursing home. This article focuses on the areas where high-quality care can improve outcomes.

A Compact and Low-Cost MEMS Loudspeaker for Digital Hearing Aids

A microelectromechanical-systems (MEMS)-based electromagnetically actuated loudspeaker to reduce form factor, cost, and power consumption, and increase energy efficiency in hearing-aid applications is presented. The MEMS loudspeaker has multilayer copper coils, an NiFe soft magnet on a thin polyimide diaphragm, and an NdFeB permanent magnet on the perimeter. The coil impedance is measured at 1.5 Omega, and the resonant frequency of the diaphragm is located far from the audio frequency range. The device is driven by a power-scalable, 0.25-mum complementary metal-oxide semiconductor class-D SigmaDelta amplifier stage. The class-D amplifier is formed by a differential H-bridge driven by a single bit, pulse-density-modulated SigmaDelta bitstream at a 1.2-MHz clock rate. The fabricated MEMS loudspeaker generates more than 0.8-mum displacement, equivalent to 106-dB sound pressure level (SPL), with 0.13-mW power consumption. Driven by the SigmaDelta class-D amplifier, the MEMS loudspeaker achieves measured 65-dB total harmonic distortion (THD) with a measurement uncertainty of less than 10%. Energy-efficient and cost-effective advanced hearing aids would benefit from further miniaturization via MEMS technology. The results from this study appear very promising for developing a compact, mass-producible, low-power loudspeaker with sufficient sound generation for hearing-aid applications.

Hearing aids for nursing home residents: Current policy and future needs

Hearing aids are crucial for people with hearing loss, especially dementia patients in nursing homes. However, the actual use of hearing aids in this population is very low. A major barrier to use is the cost. This paper examines the issue in terms of current financial coverage available through federal and state systems as well as private insurance. We discuss the applicability of the Americans with Disabilities Act (ADA) and other federal laws to this problem. There is a need for future policy development to improve both the quality of hearing aids and the financial mechanisms that will allow nursing home residents to use them. Plans to move the policy agenda forward are suggested.

Sensory impairment in older adults: Part 1: Hearing loss

Preserving older adults' sense of hearing and helping them to maintain communication in the face of changes that occur with age are areas of concern for nurses. In addition to reviewing the types of hearing impairment, this article emphasizes assessment strategies and interventions that nurses can use across settings. This is Part 1 of a two-part article on sensory impairment in older adults; in the November 2006 issue, Part 2 will address visual impairment in this population.