Author(s): WU Shanshan, YU Jinning, HE Chunhong, MOU Hongxiang, WANG Chen, ZHANG Yan, ZHANG Changyun, YU Shanfa, LI Xinzuo
Pages: 917-919
Year: 2016 Issue:  12
Journal: Chinese Journal of Industrial Hygiene and Occupational Diseases
Keyword:  Noise; occupational; Hearing loss; Occupational health; Risk factors;
Abstract: Objective To investigate the current status of hearing loss and related influencing factors in workers with noise exposure in refining and chemical industry.Methods From August 2015 to March 2016,the investigation method of collecting the data of past occupational health examinations and measuring noise in working environment was used to enroll 8 672 male workers.Results Of all workers,11.6％ were diagnosed with hearing loss.There were significant differences in the distribution of hearing impairment among workers exposed to noise at different ages,device types and types of work (x2=17.80,77.80 and 30.53,all P＜0.05).The level of noise exposure ≥ 85 dB(A)(OR=5.79,95％CI 3.70-8.81),working years with noise exposure(OR=l.57,95％ CI 1.05-2.43),and 25 years (OR =3.29,95％ CI 2.08-5.71) were risk factors for hearing loss in workers with noise exposure in refining and chemical industry.Conclusion The level of noise exposure and working years with noise exposure are main influencing factors for hearing loss in workers with noise exposure in refining and chemical industry.