Relationship between Occupational Noise Exposure and Hearing Loss of a Automobile Manufacturing Enterprise in Guangzhou

Objective To study the effect of noise exposure on hearing loss in workers of the work places.Methods Using cross sectional study,and occupational health investigation and pure tone audiometry were conducted in workers exposed to noise of a automobile manufacturing enterprise in Guangzhou.Results Workplace noise qualified rate was 49.25%;noise intensity in 80dB(A) and above,along with exposure to noise hearing loss rate increased in length,80~,85~,90~ dB(A) 3 noise intensity in the group,along with noise exposed length increased hearing loss detection rate was obviously increased(both P0.05);with exposure to noise the intensity of the hearing loss increase detection rate showed a rising trend(χ2=17.571,P0.01;χ2=15.345,P0.01;χ2=59.805,P0.01).Conclusion The prolonged noise exposure time and high intensity noise exposure may increase the risk of hearing damage.