Time Trend of Occupational Noise-induced Hearing Loss in a
Metallurgical Plant With a Hearing Conservation Program
Dublin Core
Title
Time Trend of Occupational Noise-induced Hearing Loss in a
Metallurgical Plant With a Hearing Conservation Program
Metallurgical Plant With a Hearing Conservation Program
Subject
Hearing loss
Noise-induced
Occupational health
Time series
Noise-induced
Occupational health
Time series
Description
This study aimed to analyze the trend of occupational noise-induced hearing loss (ONIHL)
in Brazilian workers at a metallurgical plant with a hearing conservation program (HCP), which has been
addressed in a previous study.
Methods: All 152 workers in this time series (20032018) participated in the HCP and used personal
protective equipment. All annual audiometry records in the company’s software were collected from the
electronic database. The trend of ONIHL was analyzed with the joinpoint regression model. The hearing
thresholds of ONIHL cases at the end of the series were compared with those found in a national
reference study.
Results: The binaural mean hearing thresholds at 3, 4, and 6 kHz at the end of the series were higher for
ages 50 years, exposures 85 dB (A), time since admission >20 years, and maintenance workers.
Significance was found only in the group divided by age. There was an increasing time trend of ONIHL,
though with a low percentage variation for the period (AAPC ¼ 3.5%; p ¼ 0.01). Hearing thresholds in this
study differed from the reference one.
Conclusion: Despite the unmet expectation of a stationary trend in the study period, the time pace of
ONIHL evolution did not follow what was expected for a population exposed to noise. These findings
signal to the scientific community and public authorities that good ONIHL control is possible when HCP is
well implemented.
in Brazilian workers at a metallurgical plant with a hearing conservation program (HCP), which has been
addressed in a previous study.
Methods: All 152 workers in this time series (20032018) participated in the HCP and used personal
protective equipment. All annual audiometry records in the company’s software were collected from the
electronic database. The trend of ONIHL was analyzed with the joinpoint regression model. The hearing
thresholds of ONIHL cases at the end of the series were compared with those found in a national
reference study.
Results: The binaural mean hearing thresholds at 3, 4, and 6 kHz at the end of the series were higher for
ages 50 years, exposures 85 dB (A), time since admission >20 years, and maintenance workers.
Significance was found only in the group divided by age. There was an increasing time trend of ONIHL,
though with a low percentage variation for the period (AAPC ¼ 3.5%; p ¼ 0.01). Hearing thresholds in this
study differed from the reference one.
Conclusion: Despite the unmet expectation of a stationary trend in the study period, the time pace of
ONIHL evolution did not follow what was expected for a population exposed to noise. These findings
signal to the scientific community and public authorities that good ONIHL control is possible when HCP is
well implemented.
Creator
Adalva V. Couto Lopes *, Cleide F. Teixeira , Mirella B.R. Vilela , Maria L.L.T. de Lima
Source
https://pdf.sciencedirectassets.com/287282/1-s2.0-S2093791124X00037/1-s2.0-S2093791124000246/main.pdf?X-Amz-Security-Token=IQoJb3JpZ2luX2VjED4aCXVzLWVhc3QtMSJHMEUCIQDlH6OX33tCkGtyRzOSMlfYQJXDj7x4ckSlzkYwKbwefAIgA%2BroGj5KxvUxpm1fTWYi18kFA0Rhet6A2NrVthKvbG0qswUIBxAFGgwwNTkwMDM1NDY4NjUiDJDi4lVLTFCPHNiDPSqQBdbMeAJN%2BgexpxtsuXKCPhCJez%2BhfTrfj0VU1IyTrxU%2BoFg%2B%2BtwA2G3OEUzzeiOT4eifFk43MjWJJh0v%2BqMZ%2BI7NBS3Xa7SrFnjgKMtdgKCxtsDOdEVgNnMAlX11qPA4rzCpvUsnSWIR2VUhOfYxrFn%2BXYsyAbAmbkIrWaNBi26qnChbVvi1fuKzg8wdQ787blWQpxbgPOtesfgkf4jAYkUgNXpH6L5Q6mrxhYh%2FdJC1CNyOJpt1rLh9UMqRfMlQ5TnY%2FXWsuj9wSoo4tb6pAmDcCkUy%2BiEQo2Fu0DYROVPMW%2B4b7Dsxw%2F70e0%2FDHubyDAKQTvRnoHwT9L%2BvXPNGyAY1%2B8kfdWljK0K%2FcoC8FZNBpHYZZqK1Qhnm%2BM6B3lfx7PDVjdeXxBEzzoMN6TeXcoNqL98dSLeySMa1Epi%2BkXEjF6kGj%2Br5xOOfiepDmW0LRhZsPXs6OEphiwIVn77pIZEGl%2Bj77LWDjNfd6WJNIm6j%2B%2BH8cplML2Ef0u03jQ3fPgDi1n%2FQvVi4ju1HDPxJ9MnwDYdDUfK0ROQPEBG3xk2WhACjH%2B2YvQvQZUoMK%2Bhn1aJQTV8VwRKL2giZEz%2B6j6OLmTibiiwSgu%2FyGa%2BVJzMlfi2RL7FdVPArjqFr437%2B1CPD%2Fghkpb1tA2hZqpJ%2FrPuBLTQll%2BTK6Y05IbAyZyO7ITjVZpV5equmEnA3bpPaQ9He0%2BeCcAxsnMIruWOA%2Fbq%2Bk16JQBXXtNQiNqYCy%2FOTSBso3g9d6FvteKMhYvAX0lgIselnXrRYY1g5uH%2BS8OiCUX71l5%2BuCtzSoK%2BTwdj43LbP9f3wVnGwgZTH7UsqnIRKpHJiH2YsPhxB7jnYSx9QqRXo8aKKWr8%2FK5H9yd1kMNmX%2BswGOrEBhKY%2BZDdquH1EFLEm%2Bmz5mx3%2BuyWHcPk8dYpPAR%2B9UHyE%2Fk%2Bgu2feAbjV21WJjr6iJk6GXYfkcMmp%2BCogJWC1xVS9O1T1Bh3LenpXeNVdq3S59mCfxWw%2BwDiUwwQqf3JljmlkQy9JTjoKsJuZnGQs0%2Flbm%2FSfX5RQHKwfaDfyA9rStmencC0ehi7cO4O3C2jy1l%2F%2FCiLc9sB9oqpcxrwcygWihRrbyOgR3aJEoRUPeLZN&X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Date=20260225T071058Z&X-Amz-SignedHeaders=host&X-Amz-Expires=300&X-Amz-Credential=ASIAQ3PHCVTYYCYX72A2%2F20260225%2Fus-east-1%2Fs3%2Faws4_request&X-Amz-Signature=1ffb666a47e219901be3316a381ca9e519eb5a8fcf25d2e1a539c84c791c44ca&hash=6ad8a60a0043a65b8d2d6931ee103a48a6a7b5b65472a8eac3dc61cae74dd041&host=68042c943591013ac2b2430a89b270f6af2c76d8dfd086a07176afe7c76c2c61&pii=S2093791124000246&tid=spdf-cb5c6124-2383-4050-b448-d5510479a96e&sid=323f66de8e4980408c0be7b-7fe7e7fe55f2gxrqb&type=client&tsoh=d3d3LnNjaWVuY2VkaXJlY3QuY29t&rh=d3d3LnNjaWVuY2VkaXJlY3QuY29t&ua=0b015e065457575503&rr=9d3562cf2d42008f&cc=id
Publisher
Departamento de Fonoaudiologia, Universidade Federal de Pernambuco e UFPE, Recife, PE, Brazil
Date
13 April 2024
Contributor
FAJAR BAGUS W
Format
PDF
Language
ENGLISH
Type
TEXT
Files
Citation
Adalva V. Couto Lopes *, Cleide F. Teixeira , Mirella B.R. Vilela , Maria L.L.T. de Lima, “Time Trend of Occupational Noise-induced Hearing Loss in a
Metallurgical Plant With a Hearing Conservation Program,” Repository Horizon University Indonesia, accessed April 11, 2026, https://repository.horizon.ac.id/items/show/11704.
Metallurgical Plant With a Hearing Conservation Program,” Repository Horizon University Indonesia, accessed April 11, 2026, https://repository.horizon.ac.id/items/show/11704.