Risk Factors For Hearing Loss Research Articles

OBSTRUCTIVE SLEEP APNEA RISK AND LONGITUDINAL TRAJECTORY OF FUNCTIONAL HEARING LOSS OVER EIGHT YEARS OF FOLLOW-UP

Abstract Hearing loss prevention is important for physical, cognitive and psychosocial health among older adults. Obstructive sleep apnea (OSA) might cause functional hearing loss through ischemic damages to the cochlea or central auditory processing, but there is a lack of longitudinal evidence. The National Health and Aging Trends Study (NHATS) is a longitudinal panel survey of Medicare beneficiaries aged 65+ years. STOP-Bang is a validated screening tool for OSA risk and a subsample of NHATS round 3 participants responded to a modified version (age>50, male, high blood pressure, body mass index >35 kg/m2, snore loudly, observed apnea, tiredness; range 0-7, elevated risk if ≥3). Functional hearing loss at follow-up (rounds 3-11) was defined as self-reported deafness, hearing aid use, or inability to hear well enough to use the telephone or have conversations in a room with the television or radio on. We used generalized estimating equations logistic regression with inverse probability attrition weighting, adjusting for demographics and comorbidities. Among 1,433 participants, elevated OSA (58%) was associated with higher odds of hearing loss at baseline (odds ratio:1.50, 95% confidence interval[CI]:1.08, 2.10). Both OSA groups had significant annual increases in odds of functional hearing loss (Low:1.07, 95% CI:1.01, 1.13; Elevated:1.12, 95% CI:1.07, 1.18) during the first 4 years. Afterwards, the low OSA risk group continued to have significant increase in odds of functional hearing loss but not the elevated OSA risk group. OSA might be a novel risk factor for hearing loss. Screening and treating OSA might be important for hearing loss prevention.

Knowledge and attitudes of primary care physicians regarding childhood hearing loss in Malaysia.

Childhood hearing loss is a significant health concern. Early identification and intervention are essential to maximize hearing potential and developmental outcomes, with primary care physicians (PCPs) playing a pivotal role in this process. This study aimed to assess PCPs' knowledge and attitudes toward childhood hearing loss, investigate the association between knowledge and attitudes, and examine the influence of demographic factors on PCPs' knowledge and attitudes towards childhood hearing loss. This cross-sectional study was conducted from 30 November 2017 to 30 July 2018 at three public health clinics in Malaysia, specifically in the Federal Territory of Kuala Lumpur, Selangor, and Terengganu. A self-administered questionnaire assessed PCPs' knowledge of general facts, diagnosis and intervention, and risk factors for childhood hearing loss. Additionally, the questionnaire evaluated PCPS' attitudes across cognitive, affective, and behavioural domains regarding childhood hearing loss. Most participants lacked sufficient knowledge about childhood hearing loss, with 61.4% not seeing it as a major health issue. Almost half (45.9%) didn't know that children with hearing loss can succeed in regular schools, and 78% were unaware that hearing aids don't fully restore normal hearing. Participants' awareness of risk factors varied widely, ranging from 24.6% to 90.3%. Despite these knowledge gaps, participants generally had positive attitudes towards childhood hearing loss, especially in cognitive and behavioural aspects. The study found a strong positive link between knowledge and attitudes, but demographic factors didn't significantly affect them. This study highlights the urgent need to address knowledge gaps among Malaysian PCPs regarding childhood hearing loss. While these knowledge gaps exist, PCPs' positive attitudes form a foundation for developing targeted educational interventions to improve PCPs' knowledge and skills in managing childhood hearing loss. Collaborative efforts are essential to translate these findings into meaningful improvements in paediatric audiological care.

Analysis of audiological outcomes of children referred from a universal newborn hearing screening program over 9 years in Beijing, China

Universal newborn hearing screening (UNHS) and audiological diagnosis are crucial for children with congenital hearing loss (HL). The objective of this study was to analyze hearing screening techniques, audiological outcomes and risk factors among children referred from a UNHS program in Beijing. A retrospective analysis was performed in children who were referred to our hospital after failing UNHS during a 9-year period. A series of audiological diagnostic tests were administered to each case, to confirm and determine the type and degree of HL. Risk factors for HL were collected. Of 1839 cases, 53.0% were referred after only transient evoked otoacoustic emission (TEOAE) testing, 46.1% were screened by a combination of TEOAE and automatic auditory brainstem response (AABR) testing, and 1.0% were referred after only AABR testing. HL was confirmed in 55.7% of cases. Ears with screening results that led to referral experienced a more severe degree of HL than those with results that passed. Risk factors for HL were identified in 113 (6.1%) cases. The main risk factors included craniofacial anomalies (2.7%), length of stay in the neonatal intensive care unit longer than 5 days (2.4%) and birth weight less than 1500 g (0.8%). The statistical data showed that age (P < 0.001) and risk factors, including craniofacial anomalies (P < 0.001) and low birth weight (P = 0.048), were associated with the presence of HL. This study suggested that hearing screening plays an important role in the early detection of HL and that children with risk factors should be closely monitored.

Abnormal Cholesterol Metabolism and Lysosomal Dysfunction Induce Age-Related Hearing Loss by Inhibiting mTORC1-TFEB-Dependent Autophagy.

Cholesterol is a risk factor for age-related hearing loss (ARHL). However, the effect of cholesterol on the organ of Corti during the onset of ARHL is unclear. We established a mouse model for the ARHL group (24 months, n = 12) and a young group (6 months, n = 12). Auditory thresholds were measured in both groups using auditory brainstem response (ABR) at frequencies of 8, 16, and 32 kHz. Subsequently, mice were sacrificed and subjected to histological analyses, including transmission electron microscopy (TEM), H&E, Sudan Black B (SBB), and Filipin staining, as well as biochemical assays such as IHC, enzymatic analysis, and immunoblotting. Additionally, mRNA extracted from both young and aged cochlea underwent RNA sequencing. To identify the mechanism, in vitro studies utilizing HEI-OC1 cells were also performed. RNA sequencing showed a positive correlation with increased expression of genes related to metabolic diseases, cholesterol homeostasis, and target of rapamycin complex 1 (mTORC1) signaling in the ARHL group as compared to the younger group. In addition, ARHL tissues exhibited increased cholesterol and lipofuscin aggregates in the organ of Corti, lateral walls, and spiral ganglion neurons. Autophagic flux was inhibited by the accumulation of damaged lysosomes and autolysosomes. Subsequently, we observed a decrease in the level of transcription factor EB (TFEB) protein, which regulates lysosomal biosynthesis and autophagy, together with increased mTORC1 activity in ARHL tissues. These changes in TFEB and mTORC1 expression were observed in a cholesterol-dependent manner. Treatment of ARHL mice with atorvastatin, a cholesterol synthesis inhibitor, delayed hearing loss by reducing the cholesterol level and maintaining lysosomal function and autophagy by inhibiting mTORC1 and activating TFEB. The above findings were confirmed using stress-induced premature senescent House Ear Institute organ of Corti 1 (HEI-OC1) cells. The findings implicate cholesterol in the pathogenesis of ARHL. We propose that atorvastatin could prevent ARHL by maintaining lysosomal function and autophagy by inhibiting mTORC1 and activating TFEB during the aging process.

The Association Between Dehydration and the Prognosis of Sudden Sensorineural Hearing Loss.

There is an urgent need to identify undetermined risk factors for sudden sensorineural hearing loss (SSNHL) for the development of effective treatment strategies. SSNHL is likely associated with vascular insufficiency; however, no study has evaluated the relationship between dehydration and SSNHL. This study aimed to investigate the role of dehydration in the development and prognosis of sudden sensorineural hearing loss. Retrospective case-control study. Secondary referral hospital. This was a comparative study that compared dehydration parameters between healthy subjects without SSNHL (n = 94) and patients with SSNHL (n = 94). The study also evaluated the effect of dehydrated conditions on the prognosis of SSNHL. We compared dehydration parameters, such as the blood urea nitrogen-to-creatinine ratio (BUN/Cre) and plasma osmolality (Posm), between matched healthy subjects without SSNHL and patients with SSNHL. To evaluate the effect of dehydrated conditions on the SSNHL prognosis, the SSNHL patients were divided into 2 groups based on the cutoff value obtained from the receiver operating characteristic analysis: hydrated (n = 50; BUN/Cre <21.4) and dehydrated (n = 44; BUN/Cre ≥21.4) groups. Subsequently, the severity and prognosis of SSNHL were analyzed. The dehydration parameters, BUN/Cre and Posm, were significantly higher in patients with SSNHL than in healthy subjects. The initial hearing levels and SSNHL grades were worse in the dehydrated group than in the hydrated group. Moreover, a dehydrated condition (BUN/Cre ≥21.4) was associated with a poor SSNHL prognosis in all models of the multiple logistic regression analysis. The dehydration parameters of BUN/Cre and Posm were higher in patients with SSNHL than in healthy subjects. Additionally, a dehydrated condition (BUN/Cre ≥21.4) was an independent prognostic factor for SSNHL. Level of evidence: Level 4.

An Analysis of Risk Factors for Hearing Function in Adults Living with Human Immunodeficiency Virus in Gauteng, South Africa

The aim of this study was to explore risk factors for hearing loss or affecting hearing function in adults living with HIV. A quantitative cross-sectional design was employed. A non-probability purposive sampling method was used to select and recruit 132 participants aged 18 years and above from an HIV clinic within the Academic Hospital in Gauteng Province, South Africa. Participants’ hearing were tested using, video otoscopy, tympanometry, pure tones, and speech audiometry. Of the 22.73% prevalence of hearing loss in the sample, the multiple logistic regression, controlling for other variables, indicated that age (AOR) = 1.049; 95%CI: 1.0005 to 1.0978) (p-value = 0.048) and extended use of antiretroviral therapy (AOR) = 1.0073; 95%CI: 0.9312 to 1.0896)) (p-value = 0.856) were strongly associated with the development of hearing loss. Although the odds of male participants to have hearing loss was 2.3572 (95%CI: 0.9394 to 5.915) compared to females, this association was marginal (p-value = 0.068). Current findings provide evidence for the risk factors for hearing loss in adults living with HIV. Given that an extended use of ART and a higher number of CD4 are strongly associated with hearing loss, these findings raise important implications for a focused monitoring for this population in order to identify early signs of hearing loss and implement timeous intervention to reduce the potential impact of hearing loss.

The public healthcare sector of Mauritius: knowledge of and attitudes toward hearing loss among community health workers.

Mauritius does not have community health workers trained in identifying risk factors for hearing loss or in referring patients for diagnostic testing. It is crucial to gather information about the knowledge of and attitudes toward hearing loss among community health workers before involving them in the identification and intervention of hearing loss in Mauritius. To describe the knowledge of and attitudes toward hearing loss among community health workers in Mauritius. A descriptive survey design with quantitative analysis was used. Using non-probability purposive sampling, 125 community health workers which included 94 community health officers and 31 community-based rehabilitation officers were recruited from the five catchment areas of the public healthcare sector. Participants filled in a 15-item paper-based questionnaire on the knowledge of and attitudes toward hearing loss. The questionnaire was internally consistent, with Cronbach alpha scores of 0.759 and 0.863. The overall knowledge of community health workers regarding risk factors and the identification of hearing loss was poor (38.3%). 92.6% of community health workers reported positive attitudes toward hearing loss. General knowledge of hearing loss (P=0.015) and knowledge of risk factors and identification of hearing loss (P=0.005) were significant predictors of attitudes toward hearing loss. Knowledge of and attitudes toward hearing loss were significantly associated with working experience and practice setting (P=0.004). There remains a need to educate community health workers about the risk factors and identification of hearing loss to ensure timely diagnosis and management of hearing loss at the community level.

Association between sleep duration and hearing threshold shifts of adults in the United States: National Health and Nutrition Examination Survey, 2015–2016

BackgroundObstructive sleep apnea (OSA) is linked to hearing loss (HL). Another sleep characteristics, sleep duration might also be associated with HL, but prior evidence is limited. This study is aimed to investigate the association between sleep duration and hearing level in the adult US population.MethodsIn total, a sample of 2777 individuals aged 20–69 years from the 2015–2016 National Health and Nutrition Examination Survey cycle (NHANES, 2015–2016) were investigated in this study. Self-reported sleep duration data was classified into the short-sleep (< 7 h), normal-sleep (7–9 h), and long-sleep (> 9 h) group. Multivariable linear regression models between sleep duration and hearing threshold shifts were estimated. Interactions between sleep duration and age, gender, race, OSA were also considered, and the study population was stratified by age, gender, race, and OSA to analyze the potential disparities among adults in different subgroups.ResultsLong-sleep duration was positively associated with speech- and high-frequency pure-tone average (PTA) thresholds with statistical significance (β = 1.31, 95%CI: 0.10, 2.53, P = 0.0347, and β = 2.71, 95%CI: 0.69, 4.74, P = 0.0087, respectively). When stratified by age, short sleep duration was positively associated with low-, and speech-frequency PTAs (P = 0.0140 and 0.0225, respectively) for adults aged 40–59 years, and long-sleep duration was positively associated with low-, and speech-frequency PTAs (P = 0.0495 and 0.0142, respectively) for adults aged 60–69 years with statistical significance. There was statistically significant interaction between OSA and sleep duration on speech-frequency PTA, but no significant interaction between either gender or race with sleep duration on hearing thresholds among US adults.ConclusionShort/long sleep durations are associated with worse hearing level comparing to sleep 7–9 h in the American adults. Nonoptimal sleep duration may be a potential risk factor for HL.

The Prevalence and Risk Factor of Noise-Induced Hearing Loss Among Industry Workers

Background: Noise-induced hearing loss (NIHL) has been gradually noticed for its insidious nature as an occupational hazard concomitant with various adverse personal health and industrial hygiene issues, including tinnitus, temporary threshold shift, hypertension, annoyance, elevated occupational accidents by aprosexia, stress, and poorer production performance. Objective: To assess prevalence and risk factor of noise-induced hearing loss among industry workers. Method: This cross sectional study was carried out at tertiary hospital from January 2021 to 2022, Dhaka. Where 97 workers exposed to noise and administrative controls were enrolled in study as a sample population. A structured questionnaire was developed by the expert-review method and applied to all the subjects with face-to-face interviews. Results: Out of 97 sample, 26 workers were having noise induced hearing loss (NIHL). Workers younger than 35 had a 20.59 percent NIHL incidence, while those older than 35 had a 41.38 percent NIHL incidence. The generator area of the plant had the loudest machinery (96-100 dB). As much as 46.67 percent of the generating crew had trouble hearing. Conclusion: We found out that the prevalence of noise induced hearing loss among industry workers. We also found out that workers are overexposed to noise and there is little protection accorded to the workers. It also shows that high noise intensity levels and exposure for long durations leads to hearing loss. Based on the study finding, implementation of hearing conservation programme through development and enforcement of regulations to identify and monitor occupational risk groups, restriction of importation of equipment, which emits dangerous levels of noise, are recommended.

Effects of electric welding on hearing loss and respiratory damage

Objective: To investigate the occupational health status of electric welding workers and explore the effects of electric welding on hearing loss and respiratory damage. Methods: From August to December 2021, the cluster sampling method was used to select workers from an automobile manufacturer in Guangzhou City as research subjects: 636 welding workers in the welding workshop as the welding group, 757 assembly workers in the engine workshop and the final assembly workshop exposed to pure noise as the assembly group. Occupational disease hazard factors were detected for welding positions and assembly positions, and occupational health examination was carried out for research subjects. The occupational health status, the trends of hearing loss and respiratory abnormalities with working age were compared and analyzed between the two groups. Binary logistic regression was used to analyze the association between hearing loss and respiratory abnormalities in welding workers. Results: The excess rates of welding fumes, manganese and its compounds in the welding position were both 9.68% (3/31). Its noise exposure intensity [ (85.36±2.68) dB (A) ] and excess rate [48.39% (15/31) ] were not significantly different from those in the assembly position [ (84.86±3.28) dB (A) and 43.24% (16/37) ] (P>0.05). The results of the occupational health examination showed that the detection rates of hearing loss, digital radiography (DR) chest X-ray abnormality, alanine aminotransferase abnormality, deazelaic aminotransferase abnormality and white blood cell count abnormality of workers in the welding group were higher than those in the assembly group (P<0.05). The detection rates of hearing loss, DR chest X-ray abnormality, pulmonary ventilation abnormality in the welding group and the detection rate of hearing loss in the assembly group increased with the working age of the workers (P<0.05). The hearing loss detection rate and DR chest X-ray abnormality detection rate of the workers with ≥9 years working age in the welding group were both higher than those in the assembly group workers with same working age (P<0.05). The binary logistic regression analysis showed that abnormal pulmonary ventilation and abnormal DR chest X-ray were the risk factors for hearing loss in welding workers (OR=10.83, 95%CI: 7.31-16.06; OR=16.59, 95%CI: 5.72-48.10; P<0.05) . Conclusion: Hearing loss and respiratory damage are prominent problems among welding workers, and the detection rates of abnormality increase with the working age of the workers. Hearing loss in welding workers is associated with abnormal pulmonary ventilation and abnormal DR chest X-ray.

Incidence of Hearing Loss in Corpus Callosum Agenesis.

Congenital corpus callosum agenesis (CCA) is one of the congenital anomalies in newborns, which usually presents with syndromic features. It can be asymptomatic or have variable neurological deficits. Some studies demonstrated that hearing loss can occur in patients with CCA; however, the exact prevalence remains unclear. Therefore, we aimed to investigate the prevalence of hearing loss in CCA using data from newborn hearing screening in a single tertiary referral center. A total of 126 patients with CCA combined with hearing loss diagnosed at our hospital from November 2005 to November 2022 were retrospectively included in our study. All patients had at least one screening or diagnostic auditory brainstem response result. Brain ultrasonography and magnetic resonance imaging were used to diagnose CCA. Among 126 patients, 93 had automated auditory brainstem response within a month from birth. Of the 93 patients, 20 (21.5%) had a "refer" result in the screening tests in at least one ear. The final incidence of hearing loss in patients with CCA was 16.1%. We observed no hearing loss in 22 patients with isolated CCA. Patients with CCA have a higher incidence of hearing loss. However, this is likely related to the concurrent condition of patients. CCA seems not to be a risk factor for hearing loss.

Incidence of cisplatin-induced ototoxicity in adult cancer patients based on audiometric confirmation of patient self-report

IntroductionRobust clinically relevant epidemiological and audiological data are needed to prepare for future clinical trials aiming at preventing cisplatin-induced ototoxicity in this suffering cancer population. We assessed the incidence, severity, and potential risk factors of symptomatic cisplatin-induced hearing loss in a large cohort of adults.MethodsRetrospective cohort study at a tertiary care university hospital. The study group included consecutive patients over 18 years old treated with cisplatin-based chemotherapy without concomitant inner ear radiotherapy or other ototoxic medication. Every participant underwent baseline pretreatment audiometry and was asked for audiological symptoms (tinnitus or subjective hearing loss) during the treatment. If symptomatic, comparative standard audiometry (0.125 to 8 kHz) was performed. Hearing loss was defined by a threshold shift ≥15 dB HL in at least one of the tested frequencies.ResultsA total of 401 cancer patients (59% males) with a mean age of 56 years (range 18-80) were included. Eighty-one patients (20%) developed symptomatic hearing loss, predominantly affecting the high frequencies from 4 to 8 kHz. Among them, 49 (60%) experienced simultaneous new-onset tinnitus. None of the analyzed potential risk factors (age, sex, smoking, hypertension, diabetes, dyslipidemia, chemotherapeutic regimen, and cumulative cisplatin dose) was statistically correlated with hearing loss.DiscussionAt least 1 out of 5 patients treated with cisplatin developed audiological symptoms associated with audiometric hearing loss within the 0.125 to 8 kHz range, for which new-onset tinnitus is a sensitive symptom. Not all audiological symptoms are accompanied by audiometric change. No predisposing factor could be identified. Standardized audiological monitoring before and during cisplatin-based chemotherapy allows quantitative assessment of early audiometric signs of ototoxicity, offering to optimize anticancer therapy while minimizing morbidity in a multidisciplinary setting.

Risk Factors of Hearing Impairment in New Born Infants at Prof. Dr. I.G.N.G Ngoerah General Hospital: A Retrospective Study

Introduction: The first year of life is the key to normal speech and language development, as well as intellectual and emotional growth. Identification of risk factors for hearing loss is very important for early detection, early initiation of therapy, and assessing the baby's prognosis. This study aims to determine the risk factors for hearing loss in newborns. Methods: This research is a retrospective study with a case-control study design that was conducted from January to December 2021. The research sample was newborns with hearing loss at Prof. Dr. I.G.N.G. Ngoerah hospital. Hearing loss was assessed by Otoacoustic Emission (OAE). All data were analyzed with SPSS version 25. Results: This study got a total of 55 cases of newborns with hearing loss and 55 control groups without hearing loss. Based on multivariate analysis, the factor that significantly influenced hearing loss in newborns was premature birth (adjusted OR=7.120; 95% CI: 1.902-26.654; p=0.004). There was no significant relationship between length of stay, APGAR score, birth weight, family history, hyperbilirubinemia, mechanical ventilation, meningitis, congenital abnormalities, and ototoxic drugs with hearing loss in newborns. Conclusion: Prematurity is a risk factor for hearing loss in newborns. Premature babies should be screened for hearing to detect hearing loss early. Keywords: hearing loss, neonates, premature

Universal neonatal hearing screening before and during the COVID-19 pandemic.

To verify the frequency of risk factors for hearing loss in newborns and their possible associations with universal neonatal hearing screening results before and during the COVID-19 pandemic. Historical cohort study with data analysis of newborns attended in a reference hearing health service of the Unified Health System (SUS) between January 2017 and December 2021. Those born in 2020 and 2021 were 91% less likely to fail the screening than those born in 2017, 2018, and 2019; therefore, they had a lower percentage of referrals for a retest. There was a decrease in congenital syphilis (1.00%), decrease in HIV (0.95%), and an increase in toxoplasmosis (0.58%) and increase in rubella cases in 2021 in relation to 2017. Syphilis had lower frequency rates during the COVID-19 pandemic (2020-2021). Newborns born in the pandemic year compared to those born pre-pandemic showed a reduction in the presence of two risk indicators for hearing loss and, consequently, a lower chance of failing the UNHS and a lower percentage of referral for retest.

Automated ABR screening for hearing loss and its clinical determinants among newborns with hyperbilirubinemia in National Hospital, Abuja, Nigeria.

Severe neonatal hyperbilirubinemia is a known risk factor for sensorineural hearing loss which is usually undiagnosed in our environment until school age due to a lack of routine screening programs. This cross-sectional study conducted between August 2020 and February 2021 employed a universal sampling of consecutive eligible participants after their mothers' consent. Hearing screening was conducted using an automated auditory brainstem response (AABR) device (Otoport OAE + ABR®). The proportion of AABR screening failure was assessed while associated clinical risk factors were determined using logistic regression. Statistical significance was set at 5% for all comparative analyses. One hundred and sixty newborns below 28 days of age, delivered at 34 weeks gestation and above, who had jaundice were recruited. The prevalence of screening AABR failure in at least one ear was 26.2%. Significant risk factors for AABR screening failure in addition to extreme and hazardous hyperbilirubinemia were acute bilirubin encephalopathy (ABE) (Odds Ratio (OR) =4.44, 95% CI = 3.19-6.17), birth weight below 2500 g (OR = 3.16, 95% CI = 1.48-6.77), dull tympanic membrane (TM) (OR = 5.94, 95% CI = 2.36-14.92) and exchange blood transfusion (OR = 4.84, 95% CI = 1.87-12.58). The prevalence of AABR screening failure was high, and a dull TM was its strongest predictor among late preterm and term neonates with hyperbilirubinemia. Otoscopy should be included in the care of newborn with hyperbilirubinemia and screening programs established to mitigate hearing loss among high-risk neonates in Abuja.

Frequency of hearing impairment in neonates born in a tertiary-care hospital of a developing country: A prospective-observational study.

Objective: To evaluate the frequency of hearing impairment and the prenatal, antenatal, and postnatal variables associated with hearing impairment in neonates at the Indus hospital in Karachi. Study Design: Prospective, Observational, Cohort study. Setting: Department of Pediatrics and Neonatology, Sheikh Saeed Memorial Campus (SSMC) of Indus Hospital and Health Network (IHHN) Karachi, Pakistan. Period: July 2020 to June 2022. Material &amp; Methods: We screened 426 neonates for hearing impairment utilizing otoacoustic emissions (OAEs) Auditory brainstem response test (ABR) and “brainstem auditory evoked response” (BERA). Babies who failed OAE and ABR test underwent BERA. Babies with abnormal BERA report were proven to have hearing impairment. Results: A total of 426 neonates were screened through the study period. Of these 426, 134 (31.5%) were unsuccessful and a second stage OAE test was conducted where 63 (47.0%) passed and 71 (53.0%) did not. The ABR test was administered to 71 neonates, 42 (59.2%) failed the test and received referrals for diagnostic BERA. Of those 42 neonates, 15 neonates tested positive for BERA, 10 of them were found to have sensor neural hearing loss while 5 had conductive hearing loss. Neonatal jaundice patients were more likely to experience hearing impairment (p=0.011). Family history of hearing loss (p=0.001) and fetal distress (p=0.043) were significantly related with hearing impairment. Conclusion: The result of our study has discovered a significant number of risk factors for hearing loss, which is crucial since it will allow for close monitoring of the kids who have these risk factors. Furthermore, our research emphasizes the need of newborn hearing screening in our country, since this screening is not generally carried out in all facilities.

Analysis of Newborn Hearing Screening Test Results of Children with Down Syndrome.

Aim:The aim of this study was to analyze newborn hearing screening test results of children with Down syndrome (DS).Methods:The files of 84 children with DS and 84 healthy children (control group) admitted to the Pediatrics Polyclinics of the Konya Training and Research Hospital between January 2017 and June 2020 were retrospectively reviewed.Results:Thirty-one of the 84 babies with DS were female (36.9%), and 53 were male (63.1%); 37 of the 84 babies in the control group were female (44%), and and 47 were male (56%) (P = .346). Fortty-eight (57.1%) of the 84 babies with DS and 17 (20.2%) of the 84 babies in the control group failed the first screening test (P < .001). It was determined that 24 (50%) of the 48 infants with DS who failed the first test also failed the second test and were referred, and all 17 infants in the control group who failed the first test passed the second test (P < .001). There was no significant difference in terms of birth weight, gestational week, and maternal age between infants with DS who failed and passed after the second screening test (P > .05 for all).Conclusion:Our study shows that birth weight, gestational age, and maternal age do not pose an additional risk for hearing loss in DS babies who do not have known risk factors for hearing loss.

Associations of sleep characteristics in late midlife with late-life hearing loss in the Atherosclerosis Risk in Communities-Sleep Heart Health Study (ARIC-SHHS)

ObjectivesThis study investigated associations of late midlife sleep characteristics with late-life hearing, which adds to the existing cross-sectional evidence and is novel in examining polysomnographic sleep measures and central auditory processing. MethodsA subset of Atherosclerosis Risk in Communities Study participants underwent sleep assessment in the Sleep Heart Health Study in 1996-1998 and hearing assessment in 2016-2017. Peripheral hearing thresholds (0.5-4kHz) assessed by pure-tone audiometry were averaged to calculate speech-frequency pure-tone average in better-hearing ear (higher pure-tone average=worse hearing). Central auditory processing was measured by the Quick Speech-in-Noise Test (lower score=worse performance). Sleep was measured using polysomnography (time spent in stage 1, stage 2, stage 3/4, rapid eye movement sleep; sleep-disordered breathing [apnea-hypopnea index ≥5]) and self-report (habitual sleep duration; excessive daytime sleepiness [Epworth Sleepiness Scale 10]). Linear regression models adjusted for demographic and lifestyle factors with additional adjustment for cardiovascular factors. ResultsAmong 719 Atherosclerosis Risk in Communities-Sleep Heart Health Study participants (61 ± 5years, 54% female, 100% White), worse speech-frequency pure-tone average was found with sleep-disordered breathing (2.51dB, 95% confidence interval: 0.27, 4.75) and excessive daytime sleepiness (3.35 dB, 95% confidence interval: 0.81, 5.90). Every additional hour of sleep when sleeping >8 hours was associated with worse Quick Speech-in-Noise score (1.61 points, 95% confidence interval: 0.03, 3.19). Every 10-minute increase in rapid eye movement sleep was associated with 0.14-point better Quick Speech-in-Noise score (95% confidence interval: 0.02, 0.25). ConclusionsSleep abnormalities might be risk factors for late-life hearing loss. Future longitudinal studies are needed to confirm these novel findings and clarify the mechanisms.

Conductive hearing loss in newborns: Hearing profile, risk factors, and occasions of service.

Infants diagnosed with a conductive hearing loss (CHL) are at increased risk of developmental delays. Using a sample of infants diagnosed with CHL through UNHS, this study aimed to investigate the relationship between specific demographic or clinical characteristics and 1) occasions of service to reach a hearing diagnosis and 2) the profile of CHL. Retrospective analysis was conducted for all infants with CHL born between 01/01/2007 and 31/12/2018 who had received UNHS. Chi squared analysis was conducted on data from 1208 records. Infants with ≥1 risk factor for hearing loss were more likely to attend more than three occasions of service. Infants who were bilateral refer/medical exclusion, Torres Strait Islander, had ≥1 risk factors for hearing loss or were born pre-term had greater proportions of bilateral CHL than unilateral CHL. Mild to moderate was the most frequent degree of CHL, although a unilateral or bilateral CHL did not have an association with the severity of CHL. Compared to other risk factors, infants with a syndrome had greater proportions of bilateral than unilateral CHL. Risk factors of craniofacial abnormality, prolonged ventilation, or syndrome had greater proportions of mild to moderate CHL than moderate or greater. On average, infants were diagnosed with a CHL at 37.29 weeks of age. These findings highlight the relationship between clinical/demographic characteristics and occasions of service to diagnose CHL in children, including the CHL profile. An understanding of this relationship may help clinicians to better plan, assess and manage infants diagnosed with a CHL through UNHS.

Analytical method for detecting outlier evaluators

BackgroundEpidemiologic and medical studies often rely on evaluators to obtain measurements of exposures or outcomes for study participants, and valid estimates of associations depends on the quality of data. Even though statistical methods have been proposed to adjust for measurement errors, they often rely on unverifiable assumptions and could lead to biased estimates if those assumptions are violated. Therefore, methods for detecting potential ‘outlier’ evaluators are needed to improve data quality during data collection stage.MethodsIn this paper, we propose a two-stage algorithm to detect ‘outlier’ evaluators whose evaluation results tend to be higher or lower than their counterparts. In the first stage, evaluators’ effects are obtained by fitting a regression model. In the second stage, hypothesis tests are performed to detect ‘outlier’ evaluators, where we consider both the power of each hypothesis test and the false discovery rate (FDR) among all tests. We conduct an extensive simulation study to evaluate the proposed method, and illustrate the method by detecting potential ‘outlier’ audiologists in the data collection stage for the Audiology Assessment Arm of the Conservation of Hearing Study, an epidemiologic study for examining risk factors of hearing loss in the Nurses’ Health Study II.ResultsOur simulation study shows that our method not only can detect true ‘outlier’ evaluators, but also is less likely to falsely reject true ‘normal’ evaluators.ConclusionsOur two-stage ‘outlier’ detection algorithm is a flexible approach that can effectively detect ‘outlier’ evaluators, and thus data quality can be improved during data collection stage.