The effect of altitude on absolute hearing threshold levels

1982 ◽  
Author(s):  
I. B. Mekjavic ◽  
D. Sinclair ◽  
D. Steele ◽  
N. S. Longridge
Keyword(s):  
Hearing Threshold ◽  
Threshold Levels

Hearing loss associated with weapons noise exposure: when to investigate an asymmetrical loss

1995 ◽  
Vol 109 (4) ◽  
pp. 291-295 ◽  
Author(s):  
H. J. Cox ◽  
G. R. Ford
Keyword(s):  
Hearing Loss ◽  
Noise Exposure ◽  
Hearing Threshold ◽  
Routine Testing ◽  
Threshold Levels ◽  
Average Loss ◽  
The Right ◽  
Air Conduction ◽  
Selection Of

AbstractThe air conduction thresholds in the right and left ears, and the interaural asymmetry of thresholds at 0.5, 1, 2, 3, 4 and 6 kHz were measured in a group of 225 soldiers exposed to a variety of weapon noise who were referred for assessment because of a deterioration in hearing on routine testing. At 0.5 and I kHz the threshold levels rarely exceeded 25 dB and the interaural asymmetry was 10 dB or less in 90 per cent of cases. The degree of hearing loss and interaural asymmetry increased as the frequency increased, with the average loss being significantly greater in the left ear at 2, 3, 4 and 6 kHz.Recommendations are made for the selection of cases of asymmetrical hearing loss exposed to weapon noise which require further investigation to exclude a retrocochlear cause or to define spurious hearing threshold levels.

Some nonauditory correlates of the hearing threshold levels of a noise‐exposed aviation population

1979 ◽  
Vol 65 (S1) ◽  
pp. S119-S119 ◽  
Author(s):  
Gerald B. Thomas ◽  
Carl E. Williams ◽  
Norman G. Hoger
Keyword(s):  
Hearing Threshold ◽  
Threshold Levels

Hearing threshold levels according to age

1984 ◽  
Vol 18 (1) ◽  
pp. 55-57 ◽  
Author(s):  
C. Waudby
Keyword(s):  
Hearing Threshold ◽  
Threshold Levels

Is the relation of social class to change in hearing threshold levels from childhood to middle age explained by noise, smoking, and drinking behaviour?

2008 ◽  
Vol 47 (3) ◽  
pp. 100-108 ◽  
Author(s):  
Russell Ecob ◽  
Graham Sutton ◽  
Alicja Rudnicka ◽  
Pauline Smith ◽  
Chris Power ◽  
...  
Keyword(s):  
Social Class ◽  
Middle Age ◽  
Hearing Threshold ◽  
Drinking Behaviour ◽  
Threshold Levels

Hearing threshold levels for a population of 11 to 35 year old Australian females and males

2014 ◽  
Vol 53 (5) ◽  
pp. 289-293 ◽  
Author(s):  
W. Williams ◽  
L. Carter ◽  
M. Seeto
Keyword(s):  
Hearing Threshold ◽  
Threshold Levels

scholarly journals Normative Hearing Threshold Levels in Koreans with Normal Tympanic Membranes and Estimated Prevalence of Hearing Loss

2017 ◽  
Vol 10 (2) ◽  
pp. 129-136 ◽  
Author(s):  
Hong Ju Park ◽  
Myung Hoon Yoo ◽  
Sun Young Baek ◽  
Seon Woo Kim ◽  
Yang-Sun Cho
Keyword(s):  
Hearing Loss ◽  
Hearing Threshold ◽  
Threshold Levels ◽  
Tympanic Membranes

scholarly journals Effect of age and duration of driving on hearing status of Indian agricultural tractor drivers

2018 ◽  
Vol 37 (4) ◽  
pp. 1037-1044
Author(s):  
Abhijit Khadatkar ◽  
CR Mehta
Keyword(s):  
Hearing Impairment ◽  
Hearing Threshold ◽  
Office Workers ◽  
Age Group ◽  
Driving Experience ◽  
Threshold Levels ◽  
Increase With Increase ◽  
The Mean ◽  
Audiometric Test ◽  
Effect Of Age

Tractor noise is critical occupational hazard which is the major cause of hearing impairment among Indian agricultural farm workers. The study aimed to show the effect of age and driving exposure on hearing impairment of drivers. Ninety healthy male subjects of similar age, height, and weight were selected and divided into four groups, i.e. 21–30, 31–40, 41–50, and 51–60 years. The audiometric testing was conducted of both the ears at 10 different frequencies, i.e. 0.125, 0.25, 0.5, 1, 1.5, 2, 3, 4, 6, and 8 kHz. The hearing threshold levels of office workers at audiometric test frequencies did not exceed 25 dB(A) to cause hearing handicap. However, it exceeded 25 dB(A) for tractor drivers and was higher for higher age group tractor drivers. Whereas, it did not exceeded 25 dB(A) at the audiometric test frequencies for the office workers except at 51–60 years of age group. Also, with the increase in age group and increase of driving experience, the mean hearing threshold levels of tractor drivers increase. It was concluded that the occupational hazards of tractor driving significantly increased the hearing threshold levels and the risk is even higher for the tractor drivers with ≥15 years of driving experience. Also, the mean hearing threshold levels for tractor drivers increase with increase in driving experience.

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