The clinical assessment of "Obscure Auditory Dysfunction" (OAD) 2. Case control analysis of determining factors.

@article{Saunders1992TheCA,
  title={The clinical assessment of "Obscure Auditory Dysfunction" (OAD) 2. Case control analysis of determining factors.},
  author={Gabrielle H. Saunders and Mark P. Haggard},
  journal={Ear and hearing},
  year={1992},
  volume={13 4},
  pages={
          241-54
        }
}
Obscure Auditory Dysfunction (OAD) is defined as a clinical referral for self-reported auditory disability with no audiometric abnormality by stringent criteria. In stage 2 of a case control study of OAD, we have confirmed the general finding of stage 1 that OAD is multifactorial; compared with controls, patients as a group have a genuine performance deficit for understanding speech in noise, accompanied by personality-related factors. Paired logistic regression analysis optimally… 
Validation of parameters for assessing Obscure Auditory Dysfunction--robustness of determinants of OAD status across samples and test methods.
TLDR
A study on a further 59 new OAD patients and 64 unmatched controls, using the tests in the form present in the test package, plus certain others, confirms the validity of the three-factor model of OAD status and the utility of the clinical test package based upon it.
A clinical test battery for obscure auditory dysfunction (OAD): development, selection and use of tests.
TLDR
A demographic and clinical characterization of a sample of 50 OAD patients is summarized, new norms on the tests in the version issued, and a test package developed from a case-control research study that can be routinely used with Oad patients is described.
A pilot investigation of high-frequency audiometry in obscure auditory dysfunction (OAD) patients.
TLDR
It is proposed that OAD in fact, is the product of an ultra-high-frequency hearing impairment and its psychoacoustic sequelae and the degree to which it can be used may be limited due to the large intersubject variability in HFA thresholds in the normal population.
A critical review of King-Kopetzky syndrome: Hearing difficulties, but normal hearing?
King-Kopetzky syndrome (KKS) is the condition in which an individual complains of having difficulties understanding speech in background noise but has normal hearing thresholds on pure tone
Auditory processing in patients with structural lesions of the brain
This thesis investigated structure versus function in the central auditory nervous system (CANS) by using the lesion study approach and by utilising a validated clinical test battery for the
Characterisation of disordered auditory processing in adults who present to audiology with hearing difficulties in presence of normal hearing thresholds : correlation between auditory tests and symptoms
The diagnosis of auditory processing disorder (APD) remains controversial. Quantifying symptoms in individuals with APD by using validated questionnaires may help better understand the disorder and
The Role of a Family History in King Kopetzky Syndrome (Obscure Auditory Dysfunction)
TLDR
In 82 consecutive patients with KKS and normal middle ear function, the performance of those with and without a family history of hearing impairment on a number of sensitized tests was compared.
Competing Views on Abnormal Auditory Results After Mild Traumatic Brain Injury
: http://si p://pubs.as Central auditory processing disorder (CAPD) refers to a deficit in the neural processing of auditory stimuli that can affect listening, language, and learning. Because CAPD
The Relation Between Cochlear Neuropathy, Hidden Hearing Loss and Obscure Auditory Dysfunction
TLDR
Widespread loss of auditory nerve fibers can take place without hair cell loss or threshold elevation, as a result of either noise exposure or ageing, leading to perceptual deficits without affecting the audiogram.
Prevalence of clinical referrals having hearing thresholds within normal limits
TLDR
The prevalence of APD among children and adults, defined as listening problems despite normal audiometry, is estimated to be about 0.5–1.0% of the general population.
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A proportion of individuals consulting audiology clinics complain of difficulties discriminating speech in noisy environments but have clinically 'normal' hearing, do not have signs of middle ear
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A self-administered questionnaire concerning auditory disability and handicap was completed by 1691 subjects who were part of a two-stage random sample of the UK adult population, finding little evidence for the concept of a 'low fence' in the relationship between impairment and either disability or handicap.
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Any cochlear component of OAD does not appear to affect the function of the outer hair cells sufficiently to modify EOAEs materially.
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TLDR
A procedure has been developed by recording the signals from two Zwislocki couplers in a KEMAR mannikin to produce a headphone-presented set of speech material containing the important dichotic cues present in free field listening that enables readily calibrated and experimentally controllable conditions to be set up to measure aspects of auditory disability and, for example, its alleviation via amplification.
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A group of 15 patients with complaints of having difficulties in understanding speech, especially in noisy surroundings in spite of (nearly) normal pure-tone audiograms, was subjected to a battery of
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TLDR
This belief is substantiated by two additional observations: a) Pick (1980a) reported evidence which suggested that poor frequency resolution can be dissociated from threshold in TTS, and more recently, clear physiological evidence has been obtained that FTC bandwidths in guinea pig can be impaired, without substantial elevation of threshold, after chronic or acute administration of ototoxic diuretics.
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