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

ObjectivesTo report the effectiveness of, and barriers and facilitators to, hearing rehabilitation for care home residents with dementia.DesignSystematic review.Setting and ParticipantsCare home residents with dementia and hearing loss.MethodsNo restrictions on publication date or language were set and gray literature was considered. Eligible studies were critically appraised and presented via a narrative review.ResultsSixteen 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 ImplicationsResidents 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.     

Decision Aid Interventions for Family Caregivers of Persons With Advanced Dementia in Decision-Making About Feeding Options: A Scoping Review

ObjectivesWe provided an overview of the literature on decision aid interventions for family caregivers of older adults with advanced dementia regarding decision making about tube feeding. We synthesized (1) the use of theory during the development, implementation, and evaluation of decision aids; (2) the development, content, and delivery of decision aid interventions; (3) caregivers’ experience with decision aid interventions; and (4) the effect of decision aid interventions on caregivers’ quality of decision-making about feeding options.DesignScoping review.MethodsWe conducted a scoping review of peer-reviewed studies published January 1, 2000–June 30, 2022, in MEDLINE, EMBASE, The Cochrane Library, CINAHL, and Web of Science databases. The process was guided by Arksey and O’Malley’s methodological framework, which includes identifying the research question, choosing related studies, charting the data, and summarizing results. Empirical articles concerning the decision aid interventions about feeding options were selected.ResultsSix publications reporting 4 unique decision aid interventions were included. All the interventions targeted caregivers of older adults with advanced dementia. Three decision aids were culturally adapted from existing decision aids. The Ottawa Decision Support Framework and the International Patient Decision Aid Standards Framework were used in these 6 publications. Interventions aimed to improve decision making regarding tube feeding for caregivers through static delivery methods. Caregivers rated these decision aids as helpful and acceptable. Decisional conflict and knowledge of feeding options were the most common outcomes evaluated. Reduction in decisional conflict and increase in knowledge were consistently found among dementia caregivers, but no intervention effects were found on preferences for the use of tube feeding.Conclusions and ImplicationsDecision aid interventions effectively improve decision-making regarding tube feeding among the target population. Cultural adaptation of an existing decision aid intervention is the main strategy. However, the lack of guidance of a cultural adaptation framework in this process may lead to difficulties explaining caregivers’ behavioral changes. Moreover, merely providing information is not enough to change caregivers’ preferences or behavior of use of tube feeding. A systematic approach to cultural adaptation and interactive intervention is needed in future studies.     

Decision-Making in People With Dementia or Mild Cognitive Impairment: A Narrative Review of Decision-Making Tools

ObjectivesThis review summarized the applicability of various decision-making tools for helping people with dementia or mild cognitive impairment (MCI) and their families make decisions.DesignThis study was a narrative literature review. The protocol of this review was registered in the International Prospective Register of Systematic Reviews (PROSPERO ID: CRD42020182259).Setting and ParticipantsPeople with dementia or MCI and their families were included in this study.MethodsThis review was conducted according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses statement. We searched the Cochrane Library, PubMed, Embase, Cumulative Index to Nursing and Allied Health Literature, and Chinese Electronic Periodical Services databases from inception to May 2021. The Joanna Briggs Institute Critical Appraisal Checklists for a variety of study designs were used.ResultsTopics related to decision-making were categorized as everyday activity decisions or medical treatment decisions. Various types of decision-making tools were identified, and we observed that decision aids can be modified and used for both everyday activity decisions and medical treatment decisions. In addition to highlighting decision aids for specific decisional issues and topics, we also elucidated other validated tools that can be used to facilitate the decision-making process.Conclusions and ImplicationsThis study highlighted the topics involved in decision-making and using decision-making tools. The current review provides information that can help individuals and health care professionals choose optimal decision-making tools. On the basis of our findings, future studies can determine the most appropriate tools for intervention or outcome measures.     

Hearing aid support for patients with DR-TB in Ethiopia

SETTING:Previous and current patients with drug-resistant TB (DR-TB) who had documented treatment-related hearing impairment due to second-line injectable (SLI) use were identified from different DR-TB treatment initiation centres in Ethiopia.OBJECTIVE:To assess selected patients with DR-TB for eligibility for hearing aids and provide hearing aids to 10 eligible patients.DESIGN:This was an observational cohort study. Patients were followed up for 8 months, with hearing assessments conducted at 1, 3 and 8 months to objectively assess hearing capacity.RESULTS:Of 12 patients assessed for hearing aids eligibility, 10 were fitted with hearing aids (type XTM XP P4) and followed up for 8 months. “Formal” improvement was observed only in one patient. However, “general quality of life” appeared to be improved in nine patients.CONCLUSION:Minimal “formal” improvement was observed. However, the study was too small to say whether hearing aids should, or should not, be recommended as a public health measure. This needs a larger better controlled follow-up study. The all-oral DR-TB treatment regimens should be used for all patients with DR-TB in Ethiopia. However, as a proportion of patients with DR-TB are likely to continue receiving SLIs in the foreseeable future, they will require close audiometry assessment and appropriate care.     

Hearing aid use in nursing homes. Part 1: Prevalence rates of hearing impairment and hearing aid use

Although hearing impairment is among the most common chronic ailments of older persons, the problem is even greater among those in nursing homes. It is estimated that 70% to 90% of elderly residents in long-term care facilities have some degree of hearing impairment. Despite this high prevalence, significant underuse of hearing aids or other assistive devices exists, especially among those with dementia. OBJECTIVES: The current study assessed rates of hearing impairment and hearing aid use among residents in a large, mid-Atlantic nursing home. SETTING AND DESIGN: In a cross-sectional survey, interviews were conducted at a large, mid-Atlantic nonprofit nursing home. PARTICIPANTS: Reports were obtained from 279 resident-caregiver dyads, as well as from the Minimum Data Set (MDS) and research assistants performing the structured interviews. MEASUREMENTS: Measures included the MDS and the Barriers to Hearing Aid Use Questionnaire, which was developed for this study. RESULTS: Results show an inconsistency in reports of both hearing impairment and hearing aid use by multiple sources, as well as the underuse of hearing aids. These inconsistencies suggest that gross hearing impairment is undetected in clinical practice in over half of the residents. CONCLUSION: The findings highlight the need for regular hearing assessments in the nursing home population. They also suggest the need for evaluation of institutional-level policies regarding screening and hearing aid management, as well as the need for further information regarding potential barriers to effective hearing aid use. These issues are addressed in part 2 of this study following this report.     

Visual and Hearing Impairment Are Associated With Delirium in Hospitalized Patients: Results of a Multisite Prevalence Study

ObjectiveSensory deficits are important risk factors for delirium but have been investigated in single-center studies and single clinical settings. This multicenter study aims to evaluate the association between hearing and visual impairment or bi-sensory impairment (visual and hearing impairment) and delirium.DesignCross-sectional study nested in the 2017 “Delirium Day” project.Setting and ParticipantsPatients 65 years and older admitted to acute hospital medical wards, emergency departments, rehabilitation wards, nursing homes, and hospices in Italy.MethodsDelirium was assessed with the 4AT (a short tool for delirium assessment) and sensory deficits with a clinical evaluation. We assessed the association between delirium, hearing and visual impairment in multivariable logistic regression models, adjusting for: Model 1, we included predisposing factors for delirium (ie, dementia, weight loss and autonomy in the activities of daily living); Model 2, we added to Model 1 variables, which could be considered precipitating factors for delirium (ie, psychoactive drugs and urinary catheters).ResultsA total of 3038 patients were included; delirium prevalence was 25%. Patients with delirium had a higher prevalence of hearing impairment (30.5% vs 18%; P < .001), visual impairment (24.2% vs 15.7%; P < .01) and bi-sensory impairment (16.2% vs 7.5%) compared with those without delirium. In the multivariable logistic regression analysis, the presence of bi-sensory impairment was associated with delirium in Model 1 [odds ratio (OR) 1.5, confidence interval (CI) 1.2–2.1; P = .00] and in Model 2 (OR 1.4; CI 1.1–1.9; P = .02), whereas the presence of visual and hearing impairment alone was not associated with delirium either in Model 1 (OR 0.8; CI 0.6–1.2, P = .36; OR 1.1; CI 0.8–1.4; P = .42) or in Model 2 (OR 0.8, CI 0.6–1.2, P = .27; OR 1.1, CI 0.8–1.4, P = .63).Conclusions and implicationsOur findings support the importance of routine screening and specific interventions by a multidisciplinary team to implement optimal management of sensory impairments and hence prevention and the management of the patients with delirium.     

Hearing aid use in nursing homes. Part 2: Barriers to effective utilization of hearing AIDS

OBJECTIVE: This study examined barriers to hearing aid use among persons who were reported to have a hearing aid and among those reported to have hearing difficulties but no hearing aids. SETTING: Interviews were conducted at a large, mid-Atlantic nonprofit nursing home. PARTICIPANTS: Both nursing home residents (279) and nursing staff members (51) were interviewed. DESIGN AND MEASUREMENTS: In a cross-sectional survey of nursing home residents, brief structured interviews were performed by trained research assistants with both residents and caregivers to obtain information regarding residents' hearing ability, hearing aid use and daily maintenance, and potential barriers to such use. RESULTS: Among residents reported to have hearing problems but who did not use a hearing aid, the major problem was neglect of the issue; participants did not know why residents did not have a hearing aid, residents had not had hearing evaluations, and staff members were not aware of hearing problems in residents. Among residents who did use a hearing aid, the majority (69%) of those for whom information was available had problems with the devices. The most common problems reported were that the device was hard or inconvenient to use, it did not fit well or hurt, and the device was not functioning well. The vast majority (86%) needed help taking care of the hearing aids. Close to half of the staff members had not received any training in the use or maintenance of the devices. Lack of delegation of responsibility for the management of hearing was identified for 29%, and relatives were used for maintenance of hearing aids in 14% of residents with hearing aids. CONCLUSIONS: Barriers to hearing aid use are therefore complex and multifactorial, involving lack of system commitment to utilization of hearing aids, lack of knowledge by staff members, inappropriate delegation and care procedures, hearing aid design and fit issues, and difficulties for residents in handling the hearing aids. Addressing these issues requires change on multiple levels, including change at the institutional level, concerning policy and training; change at the unit level, regarding care procedures and follow up; change at the individual level, providing better checks of fit and function of the hearing aids; and finally, change at the societal level, addressing design and cost issues for hearing aids in this population.     

Optimal Emergency Department Care Practices for Persons Living With Dementia: A Scoping Review

ObjectivesTo summarize research on optimal emergency department (ED) care practices for persons living with dementia (PLWDs) and develop research priorities.DesignSystematic scoping review.Settings and ParticipantsPLWDs in the ED.MethodsThe following Patient-Intervention-Comparison-Outcome (PICO) questions were developed: PICO 1, What components of emergency department care improve patient-centered outcomes for persons with dementia? PICO 2, How do emergency care needs for persons with dementia differ from other patients in the emergency department? A scoping review was conducted following PRISMA-ScR guidelines and presented to the Geriatric Emergency care Applied Research 2.0 Advancing Dementia Care network to inform research priorities.ResultsFrom the 6348 publications identified, 23 were abstracted for PICO 1 and 26 were abstracted for PICO 2. Emergency care considerations for PLWDs included functional dependence, behavioral and psychological symptoms of dementia, and identification of and management of pain. Concerns regarding ED care processes, the ED environment, and meeting a PWLD's basic needs were described. A comprehensive geriatric assessment and dedicated ED unit, a home hospital program, and a low-stimulation bed shade and contact-free monitor all showed improvement in patient-centered or health care use outcomes. However, all were single-site studies evaluating different outcomes. These results informed the following research priorities: (1) training and dementia care competencies; (2) patient-centric and care partner–centric evaluation interventions; (3) the impact of community- and identity-based factors on ED care for PLWDs; (4) economic or other implementation science measures to address viability; and (5) environmental, operational, personnel, system, or policy changes to improve ED care for PLWDs.Conclusions and ImplicationsA wide range of components of both ED care practices and ED care needs for PLWDs have been studied. Although many interventions show positive results, the lack of depth and reproducible results prevent specific recommendations on best practices in ED care for PLWDs.     

A decision aid to support family carers of people living with dementia towards the end‐of‐life: Coproduction process,outcome and reflections

BackgroundFamily carers of people living with dementia often need support with making decisions about care. Many find end‐of‐life care decisions particularly difficult. The aim of this article is to present an evidence‐ and theoretical‐based process for developing a decision aid to support family carers of people with dementia towards the end‐of‐life.MethodsFollowing a systematic process, we developed a decision aid using coproduction methods and matrices to synthesize data from a systematic review and qualitative interviews with people living with dementia and family carers. Data were presented to coproduction workshops of people living with dementia, family carers, practitioners and professionals. Development was guided by the Ottawa Decision Support Framework and a modified Interprofessional Shared Decision‐Making model.ResultsThe decision aid covers four decision areas: (1) changes in care; (2) eating and drinking difficulties; (3) everyday well‐being; and (4) healthcare, tests and medication. We present an interactive decision aid, using a variety of approaches including written text, Frequently Asked Questions, top tips and illustrative quotes from people living with dementia and family carers.ConclusionThis is the first decision aid that focusses on multiple decisions towards the end‐of‐life in dementia care. The process offers a template for others to develop decision aids or similar interventions, and how to include people living with dementia in coproduction.Patient or Public ContributionFamily carers provided feedback on data collection, data analysis and the decision aid, and one is a coauthor. People living with dementia and family carers were integral to the coproduction workshops.     

Effectiveness of Mealtime Interventions on Behavior Symptoms of People With Dementia Living in Care Homes: A Systematic Review

ObjectiveElderly residents with dementia commonly exhibit increased agitation at mealtimes. This interferes with eating and can be distressing for both the individual and fellow residents. This review examines the effectiveness of mealtime interventions aimed at improving behavioral symptoms in elderly people living with dementia in residential care.DesignSystematic review.Data sourcesMedline, PsycINFO, Embase, HMIC, AMED (OvidSP); CDSR, CENTRAL, DARE (Cochrane Library, Wiley); CINAHL (EBSCOhost); British Nursing Index (NHS Evidence); ASSIA (ProQuest); Social Science Citation Index (Web of Knowledge); EThOS (British Library); Social Care Online and OpenGrey from inception to November 2012. Forward and backward citation chases, hand searches of other review articles identified in the search, and key journals.Types of studyAll comparative studies were included. Articles were screened for inclusion independently by 2 reviewers. Data extraction and quality appraisal were performed by one reviewer and checked by a second with discrepancies resolved by discussion with a third if necessary. Data were not suitable for meta-analysis so narrative synthesis was carried out.ResultsA total of 6118 articles were identified in the original search. Eleven articles were finally included. Mealtime interventions were categorized into 4 types: music, changes to food service, dining environment alteration, and group conversation. Study quality was poor, making it difficult to reach firm conclusions. Although all studies showed a trend in favor of the intervention, only 6 reported a statistically significant improvement in behavioral symptoms. Four studies suggest cumulative or lingering effects of music on agitated and aggressive behaviors.ConclusionThere is some evidence to suggest that mealtime interventions improve behavioral symptoms in elderly people with dementia living in residential care, although weak study designs limit the generalizability of the findings. Well designed, controlled trials are needed to further understand the utility of mealtime interventions in this setting.     

Carotid Atherosclerosis Is Associated With Poorer Hearing in Older Adults

ObjectivesCardiovascular disease may be linked to hearing loss through narrowing of the nutrient arteries of the cochlea, but large-scale population-based evidence for this association remains scarce. We investigated the association of carotid atherosclerosis as a marker of generalized cardiovascular disease with hearing loss in a population-based cohort.DesignCross-sectional.SettingA population-based cohort study.Participants3724 participants [mean age: 65.5 years, standard deviation (SD): 7.5, 55.4% female].MethodsUltrasound and pure-tone audiograms to assess carotid atherosclerosis and hearing loss.ResultsWe investigated associations of carotid plaque burden and carotid intima-media thickness (IMT) (overall and side-specific carotid atherosclerosis) with hearing loss (in the best hearing ear and side-specific hearing loss) using multivariable linear and ordinal regression models. We found that higher maximum IMT was related to poorer hearing in the best hearing ear [difference in decibel hearing level per 1-mm increase in IMT: 2.09 dB, 95% confidence interval (CI): 0.08, 4.10]. Additionally, third and fourth quartile plaque burden as compared to first quartile was related to poorer hearing in the best hearing ear (difference: 1.06 dB, 95% CI: 0.04, 2.08; and difference: 1.55 dB, 95% CI: 0.49, 2.60, respectively). Larger IMT (difference: 2.97 dB, 95% CI: 0.79, 5.14), third quartile plaque burden compared to first quartile (difference: 1.24 dB, 95% CI: 0.14, 2.35), and fourth plaque quartile compared to first quartile (difference: 2.12 dB, 95% CI: 0.98, 3.26) in the right carotid were associated with poorer hearing in the right ear.Conclusions and ImplicationsCarotid atherosclerosis is associated with poorer hearing in older adults, almost exclusively with poorer hearing in the right ear. Based on our results, it seems that current therapies for the prevention of cardiovascular disease may also prove beneficial for hearing loss in older adults by promoting and maintaining inner ear health.     

Unmet Hearing Health Care Needs: The Beaver Dam Offspring Study

Objectives. We evaluated the use of hearing health care services (hearing testing and hearing aids) by adults aged 21 to 84 years.Methods. Hearing was tested and medical and hearing health histories were obtained as part of the Beaver Dam Offspring Study between 2005 and 2008 (n = 3285, mean age = 49 years).Results. Of the cohort, 34% (55% of participants aged ≥ 70 years) had a hearing test in the past 5 years. In multivariate modeling, older age, male gender, occupation, occupational noise, and having talked with a doctor about a hearing problem were independently associated with having had a hearing test in the past 5 years. Hearing aid use was low among participants with a moderate to severe hearing impairment (22.5%) and among participants with a hearing handicap (8.6%), as determined by the Hearing Handicap Inventory.Conclusions. Data support the need for improvement in hearing health care. Hearing aids’ effectiveness is limited if patients do not acquire them or do not use them once acquired. Future research should focus on developing effective strategies for moving patients from diagnosis to treatment.Hearing impairment is one of the most frequent chronic conditions in adults in the United States, with epidemiological prevalence estimates reaching 90% in the oldest adults.1 Hearing impairment is often accompanied by poorer quality of life and is associated with a range of comorbidities including cognitive dysfunction and depression.2–5 Despite the potential consequences, hearing impairments are often undiagnosed and untreated, and many adults who know they have hearing impairments do not acquire hearing aids.6,7 As the US population ages, hearing health care needs and hearing loss–related morbidity will be an increasing burden on the nation’s public health infrastructure.A research working group organized by the National Institutes of Health and the National Institute of Deafness and Communication Disorders recently developed a research agenda addressing issues of accessibility of hearing health care.8 Recommendations included the need to identify factors that influence a patient’s access to hearing health care and factors that influence a patient’s perceived need and motivation for seeking out hearing health care. Our objective was to determine the prevalence of previous hearing testing and current hearing aid use in a large cohort of adults and to assess characteristics associated with hearing health care use in the general population.     

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.     

Quality of Life and Pain Medication Use in Persons With Advanced Dementia Living in Long-Term Care Facilities

ObjectivesIn residents with dementia living in a long-term care facility (LTCF), un(der)treated pain may trigger behavioral disturbances, mood syndromes, and deterioration of physical functioning and self-maintenance. Because these factors can have considerable impact on the quality of life (QoL), this study aimed to (1) compare characteristics of persons with advanced dementia living in LTCFs with and without pain medication; (2) compare QoL in these persons with and without pain, stratified by type of pain medication use; and (3) explore associations between the use of paracetamol and QoL in persons with advanced dementia living in LTCFs.Design and settingThis study analyzed baseline data from the Communication, Systematic Assessment and Treatment of Pain, Medication Review, Occupational Therapy, and Safety Study; a multicenter, cluster-randomized effectiveness-implementation clinical hybrid trial in 67 Norwegian LTCF clusters.ParticipantsIn total, 407 LTCF residents (rural and urban areas) aged ≥65 years, with Functional Assessment Staging scores of 5–7 (ie, moderate to advanced dementia).Main outcome measureQoL as assessed by the 6 QUALIDEM (validated questionnaire to measure QoL in persons with dementia living in LTCF) domains applicable to persons with moderate to severe dementia. The association between QoL and paracetamol was estimated using linear mixed-effect models, adjusting for confounding variables.Results62.0% used pain medication (paracetamol, opioids, or both). QoL was lower in residents using pain medication, compared with those without pain medication [mean QUALIDEM score 68.8 (standard deviation 17.4 vs) 75.5 (standard deviation 14.6), respectively, P < .001). Multilevel analysis showed that paracetamol use was not associated with QoL.Conclusions and ImplicationsPersons with advanced dementia living in LTCF using pain medication have a lower QoL compared with those not using pain medication. These results are of key importance for the clinician because they stress the need for regular medication review and pain management. When measured cross-sectionally, use of paracetamol is not associated with increased QoL.     

Hearing aid effectiveness after aural rehabilitation - individual versus group (HEARING) trial: RCT design and baseline characteristics

Background  

Hearing impairment is the most common body system disability in veterans. In 2008, nearly 520,000 veterans had a disability for hearing loss through the Department of Veterans Affairs (VA). Changes in eligibility for hearing aid services, along with the aging population, contributed to a greater than 300% increase in the number of hearing aids dispensed from 1996 to 2006. In 2006, the VA committed to having no wait times for patient visits while providing quality clinically-appropriate care. One approach to achieving this goal is the use of group visits as an alternative to individual visits. We sought to determine: 1) if group hearing aid fitting and follow-up visits were at least as effective as individual visits, and 2) whether group visits lead to cost savings through the six month period after the hearing aid fitting. We describe the rationale, design, and characteristics of the baseline cohort of the first randomized clinical trial to study the impact of group versus individual hearing aid fitting and follow-up visits.     

Discussing Hearing Aid Rehabilitation at the Hearing Clinic: Patient Involvement in Deciding upon the Need for a Hearing Aid

ABSTRACT

The quality of interaction between hearing health professionals and patients is one prominent, yet under-studied explanation for the low adherence in acquiring and using a hearing aid. This study describes two different ways of introducing hearing aid to the patients at their first visits at the hearing clinic: an inquiry asking patients opinion followed by offer, and an expert evaluation of the necessity of a hearing aid; and shows two different trajectories ensuing from these introductions. The trajectories represent two extreme ends of a continuum of practices of starting a discussion about hearing aid rehabilitation, in terms of how these practices affect patient participation in decision-making. The analysis shows how granting different degrees of deontic and epistemic rights to professionals and patients has different consequences with regard to the activity of reaching shared understanding on the treatment. The data consist of 17 video-recorded encounters at the hearing clinic. The method used is conversation analysis.     

A framework for evaluating the cost-effectiveness of patient decision aids: A case study using colorectal cancer screening

ObjectivePatient decision aids are important tools for facilitating balanced, evidence-based decision making. However, the potential of decision aids to lower health care utilization and costs is uncertain; few studies have investigated the cost-effectiveness of decision aids that change patient behavior. Using an example of a decision aid for colorectal cancer screening, we provide a framework for analyzing the cost-effectiveness of decision aids.MethodsA decision-analytic model with two strategies (decision aid or no decision aid) was used to calculate expected costs in U.S. dollars and benefits measured in life-years saved (LYS). Data from a systematic review of ten studies about decision aid effectiveness was used to calculate the percentage increase in the number of people choosing screening instead of no screening. We then calculated the incremental cost per LYS with the use of the decision aid.ResultsThe no decision aid strategy had an expected cost of $3023 and yielded 18.19 LYS. The decision aid strategy cost $3249 and yielded 18.20 LYS. The incremental cost-effectiveness ratio for the decision aid strategy was $36,126 per LYS. Results were sensitive to the cost of the decision aid and the percentage change in behavior caused by the decision aid.ConclusionsThis study provides proof-of-concept evidence for future studies examining the cost-effectiveness of decision aids. The results suggest that decision aids can be beneficial and cost-effective.     

我国的助听器电磁兼容标准及展望

随着数字时代的来临,越来越多的数码产品(特别是智能手机的广泛使用)带来了复杂多变的电磁环境,可能会对助听器的使用者造成干扰及影响。我国现行的助听器电磁兼容国家标准是GB/T 25102.13-2010《电声学助听器第13部分:电磁兼容(EMC)》。文章通过对现行国家标准的介绍,讨论了助听器的电磁兼容性测试指标和方法,并对我国未来的助听器电磁兼容标准作了展望。