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Fulltext Prognostic indicators of management of sudden sensorineural hearing loss in an Asian hospital

Tiong TS

Singapore Med J, 2007 Jan;48(1):45-9.
PMID: 17245516

INTRODUCTION: This retrospective review evaluates the prognostic indicators in the management of sudden sensorineural hearing loss (SSNHL) in otorhinolaryngology patients admitted to Brunei RIPAS Hospital.
METHODS: The review covered data collected from 1996 to 1998, and included patients who were treated with naftidrofuryl and dexamethasone. Their hearing improvement (more than 20 dB) in relation to pure tone audiogram patterns, hearing loss severity, vertigo, age of the patients and duration from symptom onset to time of treatment, were evaluated.
RESULTS: After exclusion of three patients with known causes of hearing loss, 50 patients with idiopathic SSNHL were reviewed. Six audiogram patterns were observed with good prognostic indicators in patterns 1 and 4, where respectively, 95 percent and 100 percent of the patients improved. The hearing improvement was noted in the majority of the patients with mild or moderate degree of hearing loss, especially noticeable in audiogram patterns 1 and 4. Initial vertigo gave poor prognosis in hearing (more than 33 percent patients with vertigo improved versus 88 percent patients without vertigo improved). Patients aged between 21 and 60 years appear to have better prognosis of hearing improvement compared to those who are outside of this age range. 92 percent patients whose treatment started within the first week of onset of hearing loss experienced hearing improvement compared to 84 percent patients whose treatment started in the second week after onset.
CONCLUSION: Fairly consistent with the previously-reported prognostic indicators are hearing loss severity, vertigo, age and duration of onset to treatment, though there was reasonably good prognosis when the patients were treated in the second week from hearing loss onset. Further findings of note were the six audiogram patterns and the good prognostic indicators in patterns 1 and 4.

Matched MeSH terms: Hearing Loss, Sensorineural/drug therapy; Hearing Loss, Sensorineural/epidemiology*
Fulltext The Noise Exposure Structured Interview (NESI): An Instrument for the Comprehensive Estimation of Lifetime Noise Exposure

Guest H, Dewey RS, Plack CJ, Couth S, Prendergast G, Bakay W, et al.

Trends Hear, 2018;22:2331216518803213.
PMID: 30295145 DOI: 10.1177/2331216518803213

Lifetime noise exposure is generally quantified by self-report. The accuracy of retrospective self-report is limited by respondent recall but is also bound to be influenced by reporting procedures. Such procedures are of variable quality in current measures of lifetime noise exposure, and off-the-shelf instruments are not readily available. The Noise Exposure Structured Interview (NESI) represents an attempt to draw together some of the stronger elements of existing procedures and to provide solutions to their outstanding limitations. Reporting is not restricted to prespecified exposure activities and instead encompasses all activities that the respondent has experienced as noisy (defined based on sound level estimated from vocal effort). Changing exposure habits over time are reported by dividing the lifespan into discrete periods in which exposure habits were approximately stable, with life milestones used to aid recall. Exposure duration, sound level, and use of hearing protection are reported for each life period separately. Simple-to-follow methods are provided for the estimation of free-field sound level, the sound level emitted by personal listening devices, and the attenuation provided by hearing protective equipment. An energy-based means of combining the resulting data is supplied, along with a primarily energy-based method for incorporating firearm-noise exposure. Finally, the NESI acknowledges the need of some users to tailor the procedures; this flexibility is afforded, and reasonable modifications are described. Competency needs of new users are addressed through detailed interview instructions (including troubleshooting tips) and a demonstration video. Limited evaluation data are available, and future efforts at evaluation are proposed.

Matched MeSH terms: Hearing Loss, Noise-Induced/diagnosis*; Hearing Loss, Noise-Induced/epidemiology*
Fulltext Core Rehabilitation Outcome Set for Single Sided Deafness (CROSSSD) study: protocol for an international consensus on outcome measures for single sided deafness interventions using a modified Delphi survey

Katiri R, Hall DA, Buggy N, Hogan N, Horobin A, van de Heyning P, et al.

Trials, 2020 Mar 04;21(1):238.
PMID: 32131880 DOI: 10.1186/s13063-020-4094-9

BACKGROUND: Single-sided deafness (SSD) describes the presence of a unilateral severe to profound sensorineural hearing loss. SSD disrupts spatial hearing and understanding speech in background noise. It has functional, psychological and social consequences. Potential options for rehabilitation include hearing aids and auditory implants. Benefits and harms of these interventions are documented inconsistently in the literature, using a variety of outcomes ranging from tests of speech perception to quality of life questionnaires. It is therefore difficult to compare interventions when rehabilitating SSD. The Core Rehabilitation Outcome Set for Single Sided Deafness (CROSSSD) study is an international initiative that aims to develop a minimum set of core outcomes for use in future trials of SSD interventions.
METHODS/DESIGN: The CROSSSD study adopts an international two-round online modified Delphi survey followed by a stakeholder consensus meeting to identify a patient-centred core outcome domain set for SSD based on what is considered critical and important for assessing whether an intervention for SSD has worked.
DISCUSSION: The resulting core outcome domain set will act as a minimum standard for reporting in future clinical trials and could have further applications in guiding the use of outcome measures in clinical practice. Standardisation will facilitate comparison of research findings.

Matched MeSH terms: Hearing Loss, Unilateral/physiopathology; Hearing Loss, Unilateral/rehabilitation*
Fulltext The quality of life in hearing impaired adolescents after hearing aid application

Mohd Adibi SMA, Chen NR, Azmir NA, Solahan N, Ismail A, Anuar AZ, et al.

Med J Malaysia, 2013 Aug;68(4):315-22.
PMID: 24145259 MyJurnal

Hearing impairment in adolescents is a major public health problem. According to the World Health Organization (WHO) deafness and hearing impairment are common health problems throughout the world. Hearing impairment generally impairs emotional, social, communication and educational function. The aim of this study was to determine the correlation between duration of hearing aid use and improvements in the quality of life. The cross sectional study was conducted at Jalan Peel Primary Special School and Universiti Kebangsaan Malaysia Medical Center (UKMMC) from July 2010 until June 2011. A total of 21 students with hearing impairment involved in this study with mean age of 12.57 (10 to 19 years old). The subjects were divided into 2 groups: first-time hearing aid users and long standing hearing aid users. The hearing assessment was conducted in the first group and hearing aids were fitted. After 1 month hearing aid fitting, the questionnaires were distributed to both groups. Statistical analysis had showed no relation (p>0.05) between duration of hearing aid use and the improvement in the quality of life. However, regardless of the duration of hearing aid usage, there was improvement in the quality of life as shown by the scores of the questionnaires. In conclusion there was no significant relation between duration of hearing aid use and the improvement in the quality of life. Hearing aids were beneficial for hearing loss students regardless of the duration of the hearing aid usage.

Matched MeSH terms: Hearing Loss
Fulltext Review of an 11-year Experience in Retrosigmoid Approach for Treatment of Acoustic Neuromas

Lim SL, Wong SH

Med J Malaysia, 2013 Jun;68(3):253-8.
PMID: 23749017 MyJurnal

This study reviews surgery on acoustic neuromas by the second author using retrosigmoid approach from January 2000 to June 2010 in the state of Sarawak. There was a total of 32 patients in this study. The commonest presenting symptom was hearing loss (81.3%), followed by headache and tinnitus (each 37.5%), ataxia (34.4%) and facial numbness (21.9%). Twenty-seven patients (84.4%) had large tumor (≥ 3cm) while 5 patients (15.6%) had medium size tumor (1.5-2.9cm). The mean tumor size was 3.6 cm. Facial nerve outcome was good to moderate in 93.7% (House and Brackmann Grade I-IV). The most common complications were CSF leak with 3 patients(9.4%) and facial numbness with 2 patients(6.3%). All either resolved with treatment or improved. There was no mortality. Excision of acoustic neuromas using retrosigmoid approach could achieve acceptable facial nerve outcome with a low incidence of morbidity without mortality.

Matched MeSH terms: Hearing Loss
Fulltext A child with epistaxis, reduced hearing and cervical lymphadenopathy: a rare case of nasopharyngeal carcinoma in a child

Muhammad Izani S, Irfan M, Suhaimi Y

Malays Fam Physician, 2011;6(2-3):82-4.
PMID: 25606231 MyJurnal

Although nasopharyngeal carcinoma (NPC) is common in this part of the world, the incidence among children is still very low worldwide. The diagnosis is sometimes delayed because of the late reporting of the symptom by the patient or parents, or difficulty in reaching the final diagnosis due to its hidden anatomical location. The challenges include the difficult endoscopy in children, inability to differentiate an adenoid from the tumour on radiograph and often the inconclusive fine needle aspiration findings. If the tumour mass at Fossa of Rosenmuller can be clearly appreciated and biopsied with undoubtedly proven histology of NPC, the diagnosis can be straight forward and treatment can be commenced as early as possible. We report a 10-year-old child presented with bilateral neck cervical lymphadenopathy and epistaxis with fine needle aspiration cytology (FNAC) of the neck mass reported as lymphoma. Further work-up confirmed he was suffering from NPC.

Matched MeSH terms: Hearing Loss
Fulltext Glomus tympanicum

Appannan VR, Md Daud MK

Malays Fam Physician, 2018;13(1):45-48.
PMID: 29796211

Glomus tympanicum is a tumour classified under the group glomus tumours, and is also known as paragangliomas. It is thought to commonly occur in women in the fifth to sixth decades of life. Here, we report a case of a 77-year-old lady with multiple co-morbids and a diagnosis of glomus tympanicum presenting to us. Her symptoms included pulsatile tinnitus, and reduced hearing, and the management of the case was done with consideration for her underlying multiple co-morbidities. This paper also describes the best modality of treatment for this patient with regard to her background history. The treatment goal was to improve her quality of life and control the disease.

Matched MeSH terms: Hearing Loss
Fulltext Noise exposure and hearing threshold profile among Zumba fitness regulars in Kuantan, Pahang, Malaysia

Ailin Razali, M. S. Othman, M. S. Rahman, N. F.I. Misaridin

IIUM Medical Journal Malaysia, 2020;19(2):67-73.
MyJurnal

Recreational noise exposure has become a major threat to the hearing system, and this
includes exposure to loud noise during group exercises such as Zumba Fitness, where loud music plays an
important role. This study aimed to assess the noise exposure and hearing threshold profile among Zumba
Fitness regulars in Kuantan, Malaysia. MATERIALS AND METHODS: Noise exposure and hearing profile
threshold were measured during Zumba Fitness sessions at a fitness studio in Kuantan, Malaysia from 24th
June 2014 to 12th August 2014. Noise exposure was measured using a noise dosimeter for one hour of Zumba
Fitness session with a total of nine sessions run by three different instructors while sound level pressure was
taken using a sound level meter during ambient, peak session and during cooling down. Thirty participants
answered questionnaires and underwent pure tone diagnostic audiometry test at a local clinic for hearing
threshold documentation. RESULTS: Some areas of the hall posed higher risks of causing noise-induced
hearing loss especially near the amplifiers. There were periods when the hearing level exceeded 115 dBA.
Early abnormal pattern could be observed in the hearing profiles of some of the participants to suggest
preliminary hearing problems. CONCLUSION: Zumba Fitness regulars have a risk of developing noise-induced
hearing loss and preventive steps should be properly addressed as NIHL is permanent and irreversible.

Matched MeSH terms: Hearing Loss
Development of hearing impairment inventory for religious duties of Muslim adult

Rahmat S, Rahman SA, Tukiran NH, Musa R, Othman NA, Dzulkarnain AAA

Med J Malaysia, 2021 03;76(2):205-211.
PMID: 33742629

OBJECTIVE: This study is a preliminary work to develop a Malay version questionnaire named 'Inventori Persepsi bagi Muslim yang Memiliki Masalah Pendengaran (IPM3P)' to assess the perception on Islamic understanding and practice among Muslim adults with hearing impairment.
METHODS: The scale development involved three phases: i) generation of domains based on the literature, ii) generation of sub-domains based on literature review and Islamic panel survey, and iii) generation of items.
RESULTS: Preliminary version of IPM3P consists of 59 items was produced, representing three domains: Obligation (18 items), Practice (21 items), and Difficulty (20 items), and seven sub-domains ('Ibadah', 'Aqidah', 'Muamalat', 'Tasawwuf', 'Akhlak','Da'wah', and 'Sirah').
CONCLUSION: The preliminary version of IPM3P needs to be psychometrically tested. This pioneering study may become an impetus towards more research pertaining to understanding the effect of hearing loss towards religious life in the future in Malaysia.

Matched MeSH terms: Hearing Loss
Fulltext Overview of occupational noise management in Malaysia

Noraidah Ismail, Sarah Rahmat

International Journal of Allied Health Sciences, 2018;2(3):445-458.
MyJurnal

This paper aims to synthesize available literature on occupational noise in Malaysia and to relate this to the current noise management practices and control. The review focuses on several main
scopes; i) history of occupational noise management in Malaysia; ii) legislative developments and legal precedents of occupational noise in Malaysia ; and iii) the hearing conservation programs (HCP) and hearing loss prevention programs (HLPP). Narrative review and synthesis. Related publications and references were identified through several ways: i) by structured searches in PubMed, Google scholar, Web of Knowledge and Science Direct using the combinations of ‘occupational noise’, ‘noise induced hearing loss; ‘hearing’, ‘knowledge’, awareness’, ‘hearing conservation program’, ‘hearing protection devices’ as key words ii) by inspecting the reference lists of relevant articles. The number of publications within the audiology which address this topic, is rather limited. All the above mentioned scopes were discussed and synthesis of literature from other related fields such as medical, health and occupational safety and health were also referred to facilitate the discussion. This paper concludes that there are an emerging trend for the studies of occupational noise Malaysia in the literature. However, the effectiveness of HCP in Malaysia, and to what extent it is accepted and being implemented is yet to be investigated.

Matched MeSH terms: Hearing Loss, Noise-Induced
Fulltext Factors associated with the parents’ intention in bringing their child to the audiologist

Nur Najihah Najwa Jamil, Masnira Jusoh, Wan Aslynn Wan Ahmad

International Journal of Allied Health Sciences, 2018;2(3):468-474.
MyJurnal

This study was designed to examine the relationship between attitude, subjective norms and perceived behavioral control towards parents’ intention in sending their child to the audiologist. A sample of 76 parents with hearing impaired child all over the Peninsular of Malaysia was involved in this research. A set of questionnaires was used for data collection. The theory of planned behavioral (TPB) was able to explain the link between human intention and their behavior. In this study, the researcher looked at parents’ behavior in bringing their child to Audiologist. In order to achieve this a set of questionnaires was adapted from Jusoh (2011) and was administered to a group of parents with hearing loss (HL) children. The result showed that there were correlations between attitude, subjective norms as well as perceived behavioral control and parents’ intention in sending their child to the audiologist. However, there was no correlation between intentions and behavior towards the same intention.

Matched MeSH terms: Hearing Loss
Fulltext Effectiveness of a Novel Index System in Preventing Early Hearing Loss among Furniture Industry Skills Training Students in Malaysia

Abdul Rahim KA, Jewaratnam J, Che Hassan CR, Hamid MD

Int J Environ Res Public Health, 2020 10 31;17(21).
PMID: 33142732 DOI: 10.3390/ijerph17218032

Occupational noise-induced hearing loss (ONIHL) is the most reported occupational disease in Malaysia. ONIHL is aggravated by the presence of early hearing loss amongst the youth prior to entering a real working environment. At technical and vocational education training (TVET) institutions, students may develop early ONIHL because training workshops are designed imitating the industrial working environment to produce skilled workers. The exceeding noise level at workshops and recent risk of non-occupational noise can cause early ONIHL among these students. Therefore, ONIHL must be addressed at the early stage of producing skilled workers. Octa hearing conservation index (OHCI) system is developed as a management and monitoring tool for hearing conservation program (HCP) in TVET institutions. Six existing and two new HCP components were used to build the index system. A pilot test on the effectiveness of the OHCI system was conducted in a selected TVET institution for six months. The post-HCP shows a 52.6% improvement compared to the pre-HCP. The implementation of HCP has shown improved awareness on the hazards of loud noise exposure and active use of hearing protection devices among participants. The OHCI system has a great potential as a tool to improve HCP implementation in TVET institutions, and eventually, industry.

Matched MeSH terms: Hearing Loss, Noise-Induced
Fulltext Glomus tympanicum

Appannan, V.R., Md Daud, M.K.

Malaysian Family Physician, 2018;13(1):45-48.
MyJurnal

Glomus tympanicum is a tumour classified under the group glomus tumours, and is also known
as paragangliomas. It is thought to commonly occur in women in the fifth to sixth decades of life.
Here, we report a case of a 77-year-old lady with multiple co-morbids and a diagnosis of glomus
tympanicum presenting to us. Her symptoms included pulsatile tinnitus, and reduced hearing,
and the management of the case was done with consideration for her underlying multiple comorbidities. This paper also describes the best modality of treatment for this patient with regard
to her background history. The treatment goal was to improve her quality of life and control the
disease.

Matched MeSH terms: Hearing Loss
Effect of noise and pesticide exposures among foggers in Selangor health district offices

Anita, AR., Noor Hassim, I.

Journal of Occupational Safety and Health, 2013;10(1):27-37.
MyJurnal

Fogging activity has become one of the important methods in tackling dengue outbreaks nowadays. Despite this, it is an occupation that has known hazards namely noise and pesticides which can affect the body organs. Based on this knowledge, a cross sectional study was conducted to determine the association between hearing impairment and serum cholinesterase level among foggers from five randomly selected Health District Offices in Selangor. A total of 200 workers comprising of 100 workers exposed to fogging activity and another 100 workers not exposed were randomly selected for this study. Data was obtained through self administered questionnaire, audiometric testing and serum cholinesterase level measurement. The overall prevalence of hearing impairment was 16% with foggers having significant higher prevalence (24%) compared to the non foggers (8%) (χ2=9.52, p=0.002). Measurement of serum cholinesterase showed that exposed workers had lower level compared to the non exposed group. Similarly, those who have hearing impairment had also lower serum cholinesterase level although it was not statistically different. Among all studied factors, age and duration of exposure to fogging activities were statistically different with hearing impairment (p

Matched MeSH terms: Hearing Loss
Prevalence and associated factors of hearing impairment in aviation and manufacturing industry in Selangor

Ahmad Syazrin Muhamad

Journal of Occupational Safety and Health, 2011;8(2):35-44.
MyJurnal

Sound is one of the source of energy generated by vibration and is carried through the air in a form of pressure waves (Frederick, 1975). This pressure waves consist of pulsation or vibration of molecules of an elastic medium such as gas, liquid and even solid (Gerber, 1974). Due to its nature, sound can be irritating when it is excessive. The excessive amount of sound is called noise. Exposure to noise is common to the workers working at the industry. This can lead to hearing loss. Hearing loss is one of the most common health problems in the industrialized world. Working activities have been related to noise exposure due to increase use of machine that generates sounds. Many workers throughout the world experience hazardous noise exposure which is ≥ 85 decibels (dB) (Seter, 1998). Based on the previous study in the European region, most of the employers had difficulties to compensate workers diagnosed with hearing loss or hearing impairment cause by the working nature. (Rachiotis et al., 2006). According to European Survey on Working Conditions, about 7% of the workers considered that their work affects their health in the form of hearing disorders. Occupational risk factors for hearing loss include occupational noise, whole body vibration, work-related diseases and exposure to chemical. In this report, we specified in the noise exposure level of the workers.

Matched MeSH terms: Hearing Loss
Fulltext The child with suspected hearing loss

Philip R

Malays Fam Physician, 2013;8(2):65-66.
PMID: 25606288 MyJurnal

An 8-year-old girl was noticed by her parents to be less attentive and she would respond only after being called several times. She had just recovered from an upper respiratory tract infection two weeks before. The parents brought her to see a primary care physician. The patient had no other complaints, and the rest of the history was unremarkable. Physical examination was normal except for the otoscopic findings shown below (Figure 1) Tuning fork tests indicated conductive deafness.

Matched MeSH terms: Hearing Loss, Conductive
Fulltext Environmental and occupational health impact of bauxite mining in Malaysia: a review

Lee, K.Y., Ho, L.Y., Tan, K.H., Tham, Y.Y., Ling, S.P., Qureshi, A.M., et al.

International Medical Journal Malaysia, 2017;16(2):137-150.
MyJurnal

In the perspective of recent bauxite mining in Malaysia, this review aims to identify the potential
environmental and health impacts on miners and surrounding communities. The environmental issues of
bauxite mining include, air, water and soil pollution due to bauxite dust; leaching of bauxite into water
sources resulting in reduced soil fertility as well as affecting agricultural food products and aquatic life.
Bauxite occupational exposure affects the health of miners, and has negative consequences on the health of
surrounding communities, such as increased respiratory symptoms, contamination of drinking water, other
potential health risks from ingestion of bauxite and heavy metals, including noise-induced hearing loss and
mental stress. This review discusses the processes of bauxite mining, its constituents and residual trace
elements, and their impact on the environment and health of exposed workers and communities. It also
explores the Malaysian legal requirements and standards of occupational exposure to bauxite.

Matched MeSH terms: Hearing Loss, Noise-Induced
Fulltext A study of occupational noise exposure among public transportation workers in Malaysia

Siti Norhafiza Abd Razak, Nurul Hazwani Mohd Yusoff, Farah Hana Mukhtar, Norsehah Abdul Karim, Noor Hasyimah Abu Rahim

Journal of Occupational Safety and Health, 2015;12(1):69-72.
MyJurnal

Working for a minimum of 8 hours, 6 days a week might have exposed the workers of public transportation to
high noise risks. However, occupational exposures in their workplace have not been adequately characterized and
identified. Assessment of occupational noise exposure among workers at five public transportation stations was made
using Sound Level Meter and through questionnaire survey. The data obtained was combined to estimate the work
shift exposure level and health impacts to the workers by using statistical analysis. The respondents participated in the
survey to identify the symptoms of noise-induced hearing loss and other health-related problems. Results of the study
indicated that occupational noise exposure among workers for Mean Continuous Equivalent Level, Leq= 76.17 dB(A)
presents small risks of developing a hearing disability. Some of the workers show symptoms of noise-induced hearing
loss and are annoyed by the sources of noise present at the public transportation.

Matched MeSH terms: Hearing Loss, Noise-Induced
Bonebridge transcutaneous bone conduction implant in children with congenital aural atresia: surgical and audiological outcomes

Ngui LX, Tang IP

J Laryngol Otol, 2018 Aug;132(8):693-697.
PMID: 30008276 DOI: 10.1017/S0022215118001123

OBJECTIVES: To investigate the surgical and audiological outcomes of the Bonebridge transcutaneous bone conduction hearing implant among children with congenital aural atresia.
METHODS: Six children were recruited and underwent Bonebridge transcutaneous bone conduction implant surgery. The patients' audiometric thresholds for air conduction, bone conduction and sound-field tests were assessed pre-operatively and at six months post-operatively. Patients' satisfaction was assessed at six months post-operatively with the Hearing Device Satisfaction Scale.
RESULTS: No major complications were reported. Mean aided sound-field thresholds improved post-operatively by more than 30 dB for 0.5-4 kHz (p 0.05). All patients were satisfied (scores were over 90 per cent) with the implant in terms of functional outcome and cosmetic appearance.
CONCLUSION: Bonebridge transcutaneous bone conduction implant surgery is safe and effective among children with congenital aural atresia with conductive hearing loss.

Matched MeSH terms: Hearing Loss, Conductive
Fulltext Development of Mandarin fricative-affricate nonsense word test: part 1. selection of best exemplars

Chong Foong Yen, Lee Onn Wah, Norfazilah Abdol, Rafidah Mazlan

Jurnal Sains Kesihatan Malaysia, 2018;16(101):179-185.
MyJurnal

A speech test that emphasizes on fricatives and affricates with high-frequency components is recommended for testing individuals with high-frequency hearing loss. Validation of the frequency-lowering feature in modern hearing aids are also important. There has been no recorded speech material in Malaysia that focuses on Mandarin fricatives and affricates. Therefore, the objective of this study was to develop a nonsense word test that contains Mandarin sibilant fricatives and affricates. A total of 180 vowel-consonant-vowel (vcv) nonsense syllables were recorded from a female and a male talker. These vcv syllables included six targeted Mandarin fricatives and affricates in three vowel contexts. Perceptual and acoustic analysis were conducted and selected vcv syllables were validated by 24 native Mandarin talkers with normal hearing through identification testing. Hundred and three syllables were rated as having a good or excellent sound quality and free from at least one of the idiosyncrasy elements. The average percentage of correct identification of vcv tokens for the female and male talkers were 85.38% and 82. 73%, respectively. Syllables that received the highest correct identification scores above the group mean were taken as the best exemplars. In total, 29 best exemplars were selected from 180 vcv syllables for the development of the Mandarin fricative-affricate nonsense word test. Future studies should include the development of performance-intensity function for individuals with normal hearing and a test manual so that the test can be used by non-native Mandarin clinicians.

Matched MeSH terms: Hearing Loss, High-Frequency

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