Design and Methods of the Early Age-Related Hearing Loss Investigation Randomized Controlled Trial.

OBJECTIVE: Hearing loss has been identified as a major modifiable risk factor for cognitive decline. The Early Age-Related Hearing Loss Investigation (EARHLI) study will assess the mechanisms linking early age-related hearing loss (ARHL) and cognitive impairment. STUDY DESIGN: Randomized, controlled, single-site, early phase II, superiority trial. SETTING: Tertiary academic medical center. PARTICIPANTS: One hundred fifty participants aged 55 to 75 years with early ARHL (severity defined as borderline to moderate) and amnestic mild cognitive impairment will be included. INTERVENTIONS: Participants will be randomized 1:1 to a best practice hearing intervention or a health education control. MAIN OUTCOME MEASURES: The primary study outcome is cognition measured by the Alzheimer Disease Cooperative Study-Preclinical Alzheimer Cognitive Composite. Secondary outcomes include additional measures of cognition, social engagement, and brain organization/connectivity. RESULTS: Trial enrollment will begin in early 2024. CONCLUSIONS: After its completion in 2028, the EARHLI trial should offer evidence on the effect of hearing treatment versus a health education control on cognitive performance, social engagement, and brain organization/connectivity in 55- to 75-year-old community-dwelling adults with early ARHL and amnestic mild cognitive impairment.

Hearing Loss and Reduced Income Growth: A Longitudinal Socioeconomic Analysis.

OBJECTIVE: Hearing loss (HL) has been linked to negative socioeconomic states, including low income. This study examines the relationship between HL and income growth. STUDY DESIGN: Longitudinal observational study. SETTING: Multicentered US epidemiologic study (Hispanic Community Health Study, HCHS). METHODS: Using data from 2 waves of the HCHS, we analyzed the association between HL and income growth in adults ages 18 to 74 years using generalized estimating equations. The exposure was HL, measured by 4-frequency pure-tone average (PTA). The outcome was yearly household income growth, with income graded on a 10-bracket scale from <$10,000 to >$100,000. Models controlled for demographics, hearing aid use, and vascular risk. RESULTS: A total of 1342 participants met inclusion criteria. At visit 1, average age was 47.6 years (SD = 12.2), and average PTA was 13.9 decibels (dB, SD = 9.5). Average follow-up was 5.9 years (SD = 0.6). There was a significant time × HL interaction: with each 10 dB worsening in HL, the odds of belonging to a higher versus a lower income bracket changed by a factor of 0.979 (P < .001) between waves 1 and 2. In other words, the odds of belonging to a higher income group decreased with worsening HL. At 38.6 dB, the odds for income growth became <1, indicating income loss rather than growth. CONCLUSION: Increased HL is associated with reduced income growth, including the possibility of negative growth (ie, income decline). This study emphasizes the value of including socioeconomic measures in randomized controlled trials assessing the impact of HL treatment and the importance of extended follow-up for study participants.

National Cohort Data Suggests an Association Between Serious Mental Illness and Audiometric Hearing Loss.

OBJECTIVE: To explore whether there is an association between serious mental illness (SMI) and hearing loss (HL) among US Hispanic adults. STUDY DESIGN AND SETTING: Cross-sectional epidemiological study (Hispanic Community Health Study), including multicentered US volunteers. METHODS: Multivariable linear regressions were conducted to study the association between SMI and HL. Adjustments were made for potential confounders including age, sex, education, vascular disease (hypertension or diabetes mellitus), and cognition. SMI was defined by (1) antipsychotic medication classification and (2) the use of at least 1 antipsychotic medication specifically used to treat SMI in clinical psychiatric practice. HL was measured by pure tone audiometry. RESULTS: A total of 7581 subjects had complete data. The mean age was 55.2 years (SD = 7.5 years) and the mean pure tone average in the better ear was 16.8 dB (SD = 10.7 dB). A total of 194 (2.6%) subjects were taking a HCHS-defined antipsychotic and 98 (1.3%) were taking at least 1 antipsychotic specifically used to treat SMI. On multivariable regression, use of HCHS's classified antipsychotics was associated with 3.75 dB worse hearing (95% confidence interval [CI] = 2.36-5.13, P < .001) and use of antipsychotics specific for SMI was associated with 4.49 dB worse hearing (95% CI = 2.56-6.43, P < .001) compared to those not using antipsychotics. CONCLUSION: SMI, as defined by either the use of HCHS-defined antipsychotics or the use of antipsychotic medication specific for SMI, is associated with worse hearing, controlling for potential confounders. Whether SMI contributes to HL, antipsychotic medication (through ototoxicity) contributes to HL, or whether HL contributes to SMI is unknown and warrants further investigation.

Radiation-Induced Sensorineural Hearing Loss and Potential Management.

The cochlear apparatus is one of the major organs at risk when considering radiation therapy (RT) for brain, head, and neck tumors. Radiation oncologists currently consider mean dose constraints of <35 Gy for conventionally fractioned radiation therapy (RT), <4 Gy for single fraction stereotactic radiosurgery, and <17.1 or 25 Gy for 3- or 5-fraction stereotactic radiosurgery, respectively, as the standard of care. Indeed, dose adjustments are made in the setting of concurrent platinum-based chemotherapy or when prioritizing tumor coverage during treatment planning. Despite guidelines, in many patients, RT to the cochlea may still cause sensorineural hearing loss through progressive degeneration and ossification of the inner ear. There are several audiologic and otolaryngologic interventions for incident RT-induced hearing loss, including hearing aids, cochlear implants, or, in the context of vestibular schwannoma due to neurofibromatosis type 2, auditory brain stem implantation. Cochlear implants are the most effective at restoring hearing and improving quality of life for those with an intact cochlear nerve. An early multidisciplinary approach is essential to optimally manage RT-induced hearing loss, and this topic discussion serves as a guide for radiation oncologists on cochlear dosimetric considerations as well as how to address potential RT-induced adverse effects.

Hearing Loss in Older People With Schizophrenia: Audiologic Characteristics and Association With Psychosocial Functioning.

OBJECTIVE: The severity and impact of hearing deficits among adults with schizophrenia spectrum disorders may become increasingly relevant with advancing age. This study evaluated hearing ability and associated psychosocial functioning among older adults aged 50-70. DESIGN: Cross-sectional analysis. SETTING: Four outpatient psychiatry clinics in New York City. PARTICIPANTS: Individuals aged 50-70 years with diagnoses of schizophrenia or schizoaffective disorder. MEASUREMENTS: Unaided pure tone air conduction audiometry conducted using a portable audiometry system determined the pure tone average (PTA) hearing threshold across four frequencies: 500, 1k, 2k, and 4k Hz. Better ear PTA defined the hearing threshold. Audiometry data retrieved from the U.S. National Health and Nutrition Examination Survey aided interpretation of sample hearing loss rates. Standard measures evaluated psychiatric symptoms, perceived impact of hearing impairment, loneliness, and quality of life. RESULTS: Among audiometry completers (N = 40), 35% (n = 14) demonstrated subclinical hearing loss (16-25 dB) and 35% (n = 14) had mild or worse hearing loss (≥26 dB). Rates were higher than expected based on age-based population data. Those who perceived hearing handicap rated it moderate (12.2%) or severe (7.3%); those who perceived tinnitus rated the impact as mild to moderate (12.2%) or catastrophic (2.4%). Neither psychiatric symptoms nor interviewer-rated quality of life was associated with hearing ability. Greater loneliness was significantly correlated with worse audiologic performance (r = 0.475, p <0.01) and greater perceived hearing handicap (r = 0.480, p <0.01). CONCLUSION: Identifying the need for hearing loss treatment among aging adults with schizophrenia spectrum disorders is important given the potential implications for social functioning, cognitive, and mental health.

Social engagement and depressive symptoms mediate the relationship between age-related hearing loss and cognitive status.

BACKGROUND AND OBJECTIVES: Age-related hearing loss (ARHL) is the third leading cause of years lived with disability. Connections among ARHL, depressive symptoms, social engagement and cognitive status are increasingly reported but the underlying mechanisms leading to these relationships are largely unknown. Exploring these mechanisms is a worthy goal, especially in older adults. This study aimed to examine the mediating effect of social engagement and depressive symptoms on the relationship between ARHL and cognitive status. METHODS: Structural equation modeling (SEM) with path analysis were performed with data from a cross-sectional study conducted in 11 community centers in 2021, which assessed older adults' intrinsic and sensory capacities using the WHO ICOPE framework. Demographic information, health profile, a binary measure of hearing capacity, depressive symptoms, social engagement, and cognitive status of participants were gathered. RESULTS: A total of 304 participants were included. ARHL was positively associated with depressive symptoms (ß = 0.18, p = 0.009) and negatively related to social engagement (ß = -0.13, p = 0.026). Social engagement was positively associated with cognitive status (ß = 0.17, p = 0.005) and negatively associated with depressive symptoms (ß = -0.23, p < 0.001). Greater depressive symptoms were negatively associated with the participants' cognition (ß = -0.13, p = 0.009). Both social engagement (ß = -0.02, p = 0.029) and depressive symptoms (ß = -0.02, p = 0.032) mediated the negative associations between ARHL and cognitive status. CONCLUSIONS: Addressing hearing loss, depressive symptoms, and enhancing social engagement should be investigated as a potential means of minimizing cognitive decline. Well-designed studies are needed to comprehensively inform the clinical practice development, particularly large prospective studies that will facilitate further elucidate possible causal mechanisms behind these observed associations.

Assessing the Accuracy of Otomatch.com Data for Individuals Applying to Otolaryngology Residency.

OBJECTIVES: Otomatch.com is an online forum for residency applicants to discuss the otolaryngology match process including academic metrics. The purpose of this study is to assess the accuracy of self-reported match data on Otomatch relative to official data reported by the National Residency Match Program (NRMP) and the Association of American Medical Colleges (AAMC). METHODS: Data was collected from publicly editable Otomatch forums (2017-2018, 2018-2019, 2019-2020) and curated Otomatch survey responses (2018-2019, 2019-2020) whose results are released after Match Day. Aggregated data was collected from the NRMP 2018 and 2020 Charting Outcomes in the Match and AAMC Report on Residents (2017-2018, 2018-2019). Measures of interest included Step 1 scores, Step 2 CK scores, publications, number of interview invitations, number of interviews attended, and AOA status. ANOVA and 2 tailed T tests were performed to compare variables within each match year. RESULTS: Average Step 2 CK score was significantly higher on publicly editable Otomatch forums than AAMC in 2017-2018 (257vs 253, P < .05) and 2018-2019 (258vs 252, P < .05). Interviews attended were significantly higher on Otomatch survey responses than the publicly editable forum in 2019-2020 (13vs 9, P-value < .05). Step 1 scores, interview invitations, and AOA status were not statistically significantly different when data was available. CONCLUSION: Applicant statistics from online forums, online surveys, NRMP, and AAMC are consistent, except for Step 2 CK scores. Self-reported data on the Otomatch forum is an accurate estimate of academic metrics of otolaryngology residency applicants.

Correlates of hearing loss among adults with schizophrenia.

BACKGROUND: Hearing loss (HL) is associated with adverse cognitive, mental, and physical health outcomes. There is evidence that across age groups HL is more prevalent in people with schizophrenia than the general population. Given that people with schizophrenia may already be vulnerable to cognitive and psychosocial disability, we sought to examine how hearing ability relates to concurrent levels of cognitive, mental and daily functioning. METHODS: Community-dwelling adults with schizophrenia (N = 84) ages 22-50 completed pure tone audiometry assessments. Hearing threshold (in decibels) was defined as the lowest detectable pure tone at 1000 Hz. Pearson correlation was used to test the hypothesis that higher hearing thresholds (worse hearing) would be significantly associated with poorer performance on the Brief Assessment of Cognition in Schizophrenia (BACS). Additional analyses explored the relationships between audiometric threshold and functional capacity measured with the Virtual Reality Functional Capacity Assessment Tool (VRFCAT) and symptoms severity rated on the Positive and Negative Syndrome Scale (PANSS). RESULTS: Hearing threshold was inversely and significantly correlated with the BACS composite score (r = -0.27, p = 0.017). This relationship was reduced but remained significant after controlling for age (r = -0.23, p = 0.04). Hearing threshold was not associated with VRFCAT or psychiatric symptom measures. CONCLUSIONS: While schizophrenia and HL are independently associated with cognitive impairment, the magnitude of impairment in this sample was greater among those with poorer hearing. Findings warrant further mechanistic study of the relationship between hearing impairment and cognition and have implications for addressing modifiable health risk factors for higher morbidity and mortality in this vulnerable population.

Prevalence of Subclinical Hearing Loss in the United States.

OBJECTIVE: Current definitions of hearing loss (HL) may be insufficiently strict, as subclinical hearing loss (SCHL; >0 and ≤25 dB hearing level) has been associated with deleterious age-related conditions. SCHL prevalence and mean age of HL onset in the United States has not been characterized. STUDY DESIGN: A cross-sectional epidemiologic prevalence study. SETTING: US Community. METHODS: We analyzed cross-sectional audiometric data in the US National Health and Nutrition Examination Survey (2005-2012, 2015-2018, n = 15,649). Results were scaled to the current population using weighting. RESULTS: 79.6% of participants (227.32 million Americans) had SCHL. The mean age of HL onset at thresholds of 25, 20, and 15 dB was 74, 66, and 55 years, respectively, for the 4-frequency pure-tone average, and 48, 44, and 35 years for the high-frequency pure-tone average. CONCLUSION: We present SCHL prevalence and define HL onset by various sensitive definitions. These results inform ongoing public health efforts to increase hearing aid utilization, particularly given the arrival of over-the-counter hearing aids.

Patient-Reported Postoperative Pain and Numbness: Applications for Endoscopic vs. Microscopic Ear Surgery.

Background: Transcanal endoscopic ear surgery (TEES) avoids a postauricular incision, which has been shown to minimize pain and numbness. Our objective is to assess how much patients value minimizing pain and numbness relative to other postoperative otologic outcomes. Methods: Cross-sectional anonymous surveys were distributed to otolaryngology clinic patients in a tertiary care center. Patients were instructed to rate how much they value various outcomes when undergoing hypothetical ear surgery on a scale of 0 (not important) to 10 (very important). Results: 102 patients responded. Ten percent of survey respondents were Spanish-speaking. Outcomes of the highest importance included hearing (mean 9.3; SD 1.9), staff friendliness (8.9; 1.8), numbness (8.3; 2.4), and pain (8.1; 2.5). Outcomes of moderate importance included time spent under anesthesia (7.0; 3.2), scar visibility (6.3; 3.5), incision size (5.5; 3.4), incision hidden in the ear canal (5.4, 3.9), and surgery cost to the hospital (5.1; 3.9). In linear regression analysis, increasing age was associated with decreased value placed on incision size (p < 0.001) and scar visibility (p < 0.001). Conclusion: Patients placed a high value on minimizing pain and numbness after ear surgery, nearly as much as a good hearing outcome. These patient-centric outcomes are important in justifying the minimally invasive approach of TEES.

Hearing Aid Usage and Reported Hearing Difficulty in Americans With Subclinical Hearing Loss.

OBJECTIVE: Subclinical hearing loss (SCHL) (previously defined by our group as a four-frequency pure tone average [PTA4] >0 to ≤25 dB) has recently been associated with depressive symptoms and cognitive decline. This suggests that the common 25 dB adult cutpoint in the United States for normal hearing may not be sensitive enough. We aim to characterize real-world hearing difficulties, as measured by hearing aid use and self-reported hearing difficulty, among individuals with SCHL. STUDY DESIGN: Analysis of biennial cross-sectional epidemiologic survey (National Health and Nutrition Examination Survey, 1999-2012, 2015-2016). SETTING: Community, multicentered, national. SUBJECTS: Noninstitutionalized US citizens ≥12 years old, n = 19,246. MEASURES: PTA4 (500, 1,000, 2,000, 4,000 Hz), high-frequency pure tone average (PTAhf) (6,000, 8,000 Hz), reported hearing aid use, subjective difficulty hearing. RESULTS: There were 806,705 Americans with SCHL who wore hearing aids (or 0.35% of the 227,324,096 Americans with SCHL; 95% confidence interval = 0.23%-0.54%). Among those with SCHL, 14.6% (33.1 million Americans) perceived a little trouble hearing and 2.29% (5.21 million Americans) perceived moderate/a lot of trouble hearing. When restricted to the borderline subcategory (>20 to ≤25 dB), 42.43% (6.64 million Americans) had at least a little trouble hearing. Among those with SCHL who wore hearing aids, 81% had a PTAhf >25 dB. CONCLUSION: Despite hearing loss traditionally being defined by PTA4 ≤ 25 dB in the United States, nearly 1 million adults and adolescents with SCHL wore hearing aids, and nearly half with borderline HL had subjective difficulty hearing. To better reflect real-world difficulties, stricter definitions of hearing loss should be explored, including a lower cutpoint for the PTA4 or by using the more sensitive PTAhf.

Impact of Race, Ethnicity, and Socioeconomic Status on Nasopharyngeal Carcinoma Disease-Specific and Conditional Survival.

Introduction Race, ethnicity, and socioeconomic status (SES) are complex, interconnected social determinants of health outcomes. This study uses multivariable analysis on a combination of large national datasets to examine the effects of these factors on 5-year disease-specific survival (DSS) and conditional DSS (CDSS) for nasopharyngeal carcinoma (NPC). Methods A retrospective study of adults with NPC between 2000 and 2017 from the Surveillance, Epidemiology, End Results (SEER) registry was performed, using the National Cancer Institute Yost Index, a census tract-level composite score of SES to categorize patients. Kaplan-Meier analysis and Cox's regression for DSS and CDSS were stratified by SES. Logistic regression was conducted to identify risk factors for advanced cancer stage at time of diagnosis and receiving multimodal therapy. Results Our analysis included 5,632 patients. DSS was significantly associated with race and SES ( p < 0.01). Asian/Pacific Islander patients exhibited increased survival when controlling for other variables (hazard ratio [HR] = 0.73, p < 0.01). Although Black patients were more likely to be diagnosed with advanced disease (Black odds ratio [OR] = 1.47, p < 0.01), Black patients were also less likely to receive multimodal therapy; however, this relationship lost statistical significance once SES was incorporated into the multivariable analysis. DSS was decreased among the lowest (first) and middle (second) tertiles of SES (first HR = 1.34, p < 0.01; second HR = 1.20, p < 0.01) compared with the highest (third). Conclusion Our results indicate that race, ethnicity, and SES significantly affect survival, stage at diagnosis, and treatment of NPC. An interplay of tumor biology and inequalities in access to care likely drives these disparities.

Hearing Loss Is Associated With Worse Socialization in the U.S. Hispanic Adult Population.

OBJECTIVE: The association between hearing loss and socialization has been characterized in limited detail and primarily among non-Hispanic Caucasians. We aimed to study this relationship using more detailed socialization measures than previously used and focusing on Hispanics. STUDY DESIGN: Cross-sectional epidemiologic study (Hispanic Community Health Study). SETTING: Multicentered, four U.S. communities. PARTICIPANTS: U.S. Hispanics ages 18 to 76 years. MAIN MEASURES: Multivariable linear regression controlling for confounders (age, sex, education) was conducted to analyze the association between hearing loss (four-frequency pure tone average) and socialization. Socialization was assessed with three independent surveys: a modified Cohen Interpersonal Support Evaluation List (ISEL), the Cohen Social Network Index (SNI), and a modified Moos Family Environment Scale. RESULTS: Average age was 46.7 years (standard deviation [SD], 13.6 yr; range, 18-75 yr). Average ISEL composite score was 25.9 (SD, 6.66; n = 4,330). Controlling for confounders, for every 10 dB worsening in hearing, the ISEL score decreased by 0.31 (95% confidence interval [CI], 0.08-0.52; p < 0.01). Average SNI network diversity score was 6.89 (SD, 1.81; n = 3,117) and average SNI network size was 15.4 individuals (SD, 8.11). Controlling for confounders, for every 10 dB worsening in hearing, the SNI network diversity decreased by 0.22 (95% CI, 0.15-0.29; p < 0.001), and SNI size decreased by 0.25 (95% CI, 0.07-0.62; p < 0.05). Average family cohesion score on the Moos Family Environment Scale was 12.9 (SD, 2.77; n = 4,234). Controlling for age, sex, and education, for every 10 dB worsening in hearing, family cohesion decreased by 0.14 (95% CI, 0.04-0.23; p < 0.01). CONCLUSION: Hearing loss is associated with less social support, smaller/less diverse social networks, and less family cohesion in U.S. Hispanics.

The Laterality of Age-Related Hearing Loss and Depression.

OBJECTIVE: There is a known association between hearing loss (HL) and depressive symptoms. The objective was to establish if there is a stronger association with the left or right ear. STUDY DESIGN: Cross-sectional analysis of an ongoing prospective epidemiologic cohort study. SETTING: Hispanic Community Health Study (US, multicentered). PATIENTS: Five thousand three hundred and twenty-eight adults 2:50 years old. INTERVENTIONS: None. MAIN OUTCOME MEASURES: The main outcome was depressive symptoms, measured by the 10-Item Center for Epidemiologic Studies Depression Scale-10 (CESD-10) and defined continuously and binarily. Subjects with CESD-10 2: 10 were categorized as having clinically significant depressive symptoms (CSDS). Linear and logistic regressions were performed to assess the association between depressive symptoms and hearing in each ear, controlling for hearing aid use, age, sex, educational level, study site, geographic background, cardiovascular disease, and antidepressant use. RESULTS: Mean age was 58.5 ± 6.3 years. Mean pure-tone average (PTA) was 20.3 ± 11.7 dB (range = 0 - 125) in the right ear and 20.3 ± 12.4 dB (range = -2.5 to 120) in the left. Multivariable regression adjusting for covariates demonstrated significant associations between depressive symptoms and HL in both the left and right ear. For every 20-dB worsening in right ear PTA, there was 0.89-point increase in CESD-10 (95% confidence interval = 0.59 - 1.2), and odds of CSDS increased 1.31 times (1.17 - 1.46). For every 20-dB worsening in left ear PTA, there was a 0.85-point increase in CESD-10 (0.55 - 1.14), and odds of CSDS increased 1.34 times (1.20 - 1.49). CONCLUSIONS: Worsening hearing in the right and left ears individually was associated with increased depressive symptoms and odds of CSDS. No ear laterality was demonstrated.

A precision medicine tool to understand who responds best to hearing aids in late-life depression.

OBJECTIVES: Accumulating evidence suggests that hearing loss (HL) treatment may benefit depressive symptoms among older adults with Major Depressive Disorder (MDD), but the specific individual characteristics of those who stand to improve most are unknown. METHODS: N = 37 patients ≥60 years with HL and MDD received either active or sham hearing aids in this 12-week double-blind randomized controlled trial. A combined moderator approach was utilized in the analysis in order to examine multiple different pretreatment individual characteristics to determine the specific qualities that predicted the best depressive symptom response to hearing aids. Pretreatment characteristics included: Hearing Handicap Inventory for the Elderly (HHIE-S), pure tone average (PTA), speech reception threshold (SRT), Short Physical Performance Battery (SPPB), cognition (Repeatable Battery for the Assessment of Neuropsychological Status). RESULTS: The analysis revealed a combined moderator, predicting greater improvement with active versus sham hearing aids, that had a larger effect size than any individual moderator (combined effect size [ES] = 0.49 [95% CI: 0.36, 0.76]). Individuals with worse hearing-related disability (HHIE-S: individual ES = -0.16), speech recognition (SRT: individual ES = -0.14), physical performance (SPPB: individual ES = 0.41), and language functioning (individual ES = 0.19) but with relatively less severe audiometric thresholds (PTA: individual ES = 0.17) experienced greater depressive symptom improvement with active hearing aids. CONCLUSIONS: Older adults with relatively worse HL-related, physical, and cognitive functioning may stand to benefit most from hearing aids. Given the large number of older adults experiencing HL and MDD, a non-invasive and scalable means of targeting those most likely to respond to interventions would be valuable.

Age-Related Disparities in the Treatment of Borderline/Mild Hearing Loss in the United States.

To investigate disparities in hearing aid use across the life span for borderline/mild hearing loss, a cross-sectional epidemiologic study in the National Health and Nutrition Examination Survey was conducted. Multivariable logistic regressions controlling for hearing level analyzed the association between hearing aid use and age in borderline/mild hearing loss. Age was grouped into quartiles. Of 2470 subjects, 2.0% (n = 50) were <25 years old; 12.0% (n = 297), 25 to 49 years; 65.5% (n = 1618), 50 to 74 years; and 20.5% (n = 505), ≥75 years. When compared with the youngest quartile and while controlling for hearing level, those in the second quartile were 4.6 times less likely to use hearing aids (P < .01); those in the third were 4.2 times less likely (P < .01); and those in the fourth were 4.7 times less likely (P < .001). The dramatically lower hearing aid usage of all older age groups as compared with children/younger adults represents a large unaddressed age-related disparity in the treatment of borderline/mild hearing loss.

Association of Hearing Impairment and 24-Hour Total Movement Activity in a Representative Sample of US Adults.

Importance: Lower physical activity (PA) levels have been proposed as a mechanism to explain the association between hearing loss and various adverse outcomes of aging. But whether hearing loss is associated with lower PA is poorly understood. Objective: To evaluate whether hearing loss is associated with lower levels of PA. Design, Setting, and Participants: This cross-sectional analysis was conducted in a representative sample of US adults (aged 30-69 years) who participated in the 2011-2012 cycle of the National Health and Nutrition Examination Survey (NHANES). Data analysis was conducted from July to September 2021. Exposures: Hearing was assessed, in dB, by pure-tone audiometry and summarized as the better hearing ear's pure-tone average (BPTA) of 4 speech frequencies (500, 1000, 2000, and 4000 kHz); a higher BTPA indicates worse hearing. Hearing was also categorized into normal (BPTA ≤25 dB), mild hearing impairment (>25 to 40 dB), and moderate or greater hearing impairment (>40 dB). Main Outcomes and Measures: Total 24-hour movement activity was measured using wrist accelerometers worn at all times for 7 consecutive days and summarized in monitor-independent movement summary units (MIMS) units (higher MIMS units indicate more movement). The association between BPTA and MIMS units was evaluated using a multivariable-adjusted (demographic characteristics and chronic conditions) piecewise spline regression (knot at 15 dB). Mean differences in MIMS units across hearing categories compared with normal hearing were estimated. Results: The study included 2490 participants (mean [SE] age, 48.9 [0.3] years; 900 [weighted percentage, 69.3%] White individuals, 1248 [weighted percentage, 50.8%] female participants). Before the knot at 15 dB, we found that each 10-dB higher BPTA was associated with 860.4 (95% CI, 444.8-1276.1) higher MIMS units. Conversely, after the knot, each 10-dB higher BPTA was associated with 458.6 (95% CI, 27.7-889.4) lower MIMS units. The difference in MIMS units across hearing categories was not statistically significant. Conclusions and Relevance: In this cross-sectional study, in the range of hearing sensitivity of BPTA of 15 dB or greater, worse hearing was associated with lower MIMS units. Lower PA may be a mechanism contributing to the association between hearing impairment and adverse health.

The Laterality of Early Age-Related Hearing Loss and Brain ß-Amyloid.

OBJECTIVE: Worse hearing was linked to higher brain ß-amyloid, a pathologic hallmark of Alzheimer's disease, in a recent study. We analyze the associations between ß-amyloid and early age-related hearing loss in the right versus left ear to explore the laterality of this relationship. STUDY DESIGN: Cross-sectional analysis of a prospective cohort study. SETTING: Tertiary referral center. PARTICIPANTS: Ninety-eight late middle-age adults. INTERVENTIONS: None. MAIN OUTCOME MEASURES: The primary outcome was whole brain and regional ß-amyloid standardized uptake value ratio (SUVR) on positron emission tomography. The exposure was hearing in the right and left ear, measured by pure tone average (PTA) and word recognition score (WRS). Linear regression analyzed the association between ß-amyloid and hearing in each ear, adjusting for potential confounders, including age, gender, education, cardiovascular disease, and hearing aid use. RESULTS: Mean age ±â€Šstandard deviation was 64.3 ±â€Š3.5 years. Mean PTA was 20.4 ±â€Š8.8 dB. Multivariable regression adjusting for covariates demonstrated that a 10 dB worsening in PTA in the left ear was associated with significantly higher ß-amyloid (SUVR) in the bilateral cingulate gyri (right coefficient: 0.029 [95% confidence interval: 0.003-0.054]; left: 0.029 [0.003-0.055]), bilateral frontal lobes (right: 0.024 [0.002-0.047]; left: 0.028 [0.006-0.049]), and the right temporal lobe (0.019 [0.002-0.037]). Consistent results were observed when WRS served as the exposure. No associations were observed between ß-amyloid and PTA or WRS in the right ear. CONCLUSIONS: Worse hearing in the left ear, but not the right ear, was associated with higher ß-amyloid. This might relate to asymmetric central auditory processing.