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Hearing sensitivity in farmers.

R S Karlovich1, T L Wiley, T Tweed

  • 1Department of Communicative Disorders, University of Wisconsin-Madison 53711.

Public Health Reports (Washington, D.C. : 1974)
|January 1, 1988
PubMed
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Rural men, including farmers, experience significant hearing loss due to noise exposure. This age-related hearing decline necessitates enhanced hearing conservation education for this population.

Area of Science:

  • Audiology
  • Environmental Health
  • Occupational Health

Background:

  • Hearing sensitivity naturally declines with age and higher frequencies.
  • Excessive noise exposure is a significant factor in hearing impairment, particularly in specific frequency ranges.
  • Rural populations, including agricultural workers, may face unique environmental risks affecting hearing.

Purpose of the Study:

  • To assess hearing sensitivity across a range of frequencies in a rural population.
  • To investigate the impact of age, sex, and occupation on hearing loss.
  • To determine the prevalence of communication handicaps related to hearing impairment in rural males.

Main Methods:

  • Hearing sensitivity was measured for tones from 1,000 to 8,000 Hz.
  • The study included 534 males and 278 females aged 16-85 residing in rural Wisconsin.

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  • Data analysis compared hearing loss across age groups, sexes, and occupational categories (farmers vs. non-farmers).

    • Main Results:

    • Hearing sensitivity decreased with age and higher frequencies for all subjects.
    • Males exhibited significantly greater hearing loss than females in noise-susceptible frequency ranges (3,000-6,000 Hz).
    • Hearing loss exceeded age-related expectations, with 25% of males experiencing a communication handicap by age 30, rising to 50% by age 50.

    Conclusions:

    • Rural males, including farmers, show a high prevalence of noise-induced hearing loss and communication difficulties.
    • Occupational noise exposure appears to be a primary contributor to hearing loss in this demographic.
    • There is a critical need for improved hearing conservation education programs targeting rural communities.