Abstract
Previous studies havedemonstratedassociation between exposure to occupational(workplace)noiseand blood pressure.The goal of the presentresearch was to investigate arelationshipbetween noise exposure and blood pressure among 1374 workers from 12 companies.Based on a confidence level of 95% (05.0), 175 workers as a case group and 174 as a control group wererandomly selected.In addition, theparticipantsweredivided intodifferent ageand work experiencegroups. The results revealedthat noise levelsin mostof companies exceededthe NIOSH (1998)standard. They also show asignificant statistical relationshipbetween exposuresto occupational noise level≥100 dBA (A-weighted decibel),hypertension andwork experience≥4years.It wasconcluded thatto study anassociationbetween exposure to workplacenoise and blood pressure,length of time on jobmust be taken into consideration.
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