Prevalence of noise-induced hearing loss among woodworkers in Nepal: a pilot study

Int J Occup Environ Health. 2015;21(1):14-22. doi: 10.1179/2049396714Y.0000000084. Epub 2014 Oct 21.

Abstract

Background: The woodworking industry represents an important cause of occupational noise-induced hearing loss (NIHL), a significant yet underappreciated problem in many developing countries.

Objectives: To describe the prevalence of occupational NIHL among woodworkers in Nepal and measure noise levels at workplaces.

Methods: We conducted a cross-sectional study with 124 woodworkers (88 carpenters, 36 sawyers), recruited through convenience sampling from 26 workplaces. Pure-tone audiometry between the frequencies 0·5 and 8 kHz ascertained participants' hearing status, and noise readings were taken at selected workplaces.

Results: In all, 31% of carpenters and 44% of sawyers met criteria for NIHL, with 7 and 17% meeting World Health Organization (WHO) criteria for hearing impairment (HI), respectively. Noise levels at various workplaces ranged from 71·2 to 93·9 dBA.

Conclusions: Woodworkers in Nepal are at risk of occupational NIHL. As the industry develops, this problem will likely become more extensive, highlighting the need for workplace interventions and additional research.

Keywords: Nepal,; Noise-induced hearing loss,; Occupational health and safety,; Prevalence,; Wood industry.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adolescent
  • Adult
  • Aged
  • Aged, 80 and over
  • Audiometry, Pure-Tone
  • Cross-Sectional Studies
  • Hearing Loss, Noise-Induced / epidemiology*
  • Hearing Loss, Noise-Induced / etiology
  • Humans
  • Male
  • Middle Aged
  • Nepal / epidemiology
  • Noise, Occupational / adverse effects*
  • Noise, Occupational / statistics & numerical data
  • Occupational Diseases / epidemiology*
  • Occupational Diseases / etiology
  • Occupational Exposure*
  • Pilot Projects
  • Prevalence
  • Young Adult