title: [A dynamic study of sentinel surveillance for occupational hazard in typical industrial enterprises in Guangzhou, China, from 2012 to 2014].
abstract: OBJECTIVE
  To perform a sampling survey of occupational hazard in typical industrial enterprises in Guangzhou, China, by means of sentinel surveillance, to understand the classification, distribution, and concentration/intensity of occupational hazard as well as the characteristics and development of occupational health management in Guangzhou, and to provide a scientific basis for occupational health supervision.
  
  
  METHODS
  Fifteen enterprises in information technology (IT), shipbuilding, chemical, leather and footwear, and auto repair industries were enrolled as subjects. Dynamic surveillance for occupational hazard and occupational health management was performed in workplaces of those enterprises.
  
  
  RESULTS
  The overall overproof rate of occupational hazard in the 15 sentinel enterprises from 2012 to 2014 was 6.16% (45/731). There was no significant difference in the overproof rate between the three years (P > 0.05). During the three years, enterprises in shipbuilding industry had significant higher overproof rates than those in other industries (P < 0.05). According to the results of occupational health management questionnaire, the overall coincidence rate of survey items was 57.88% (393/679); enterprises in IT industry had significant lower coincidence rates than those in other industries in 2012 and 2014 (47.62%, 29.63%; P < 0.05), while enterprises in leather and footwear industry had significant lower coincidence rates than those in other industries in 2013 (40.63%; P < 0.05).
  
  
  CONCLUSIONS
  The enterprises in shipbuilding industry are the key to the prevention and control of occupational hazard in Guangzhou. To strengthen surveillance for occupational health in workplaces in Guangzhou, it is important to enhance occupation health supervision among small and micro enterprises and develop continuous sentinel surveillance for occupational hazard in key industries.
authors.affiliation: Guangzhou Prevention and Treatment Center for Occupational Diseases, Guangzhou 510620, China.
authors.forename: Zhi
authors.initials: Z
authors.lastname: Wang
authors.affiliation: Guangzhou Prevention and Treatment Center for Occupational Diseases, Guangzhou 510620, China.
authors.forename: Xing
authors.initials: X
authors.lastname: Rong
authors.affiliation: Guangzhou Prevention and Treatment Center for Occupational Diseases, Guangzhou 510620, China.
authors.forename: Yongqin
authors.initials: Y
authors.lastname: Li
authors.affiliation: Guangzhou Prevention and Treatment Center for Occupational Diseases, Guangzhou 510620, China.
authors.forename: Wenfeng
authors.initials: W
authors.lastname: Zeng
authors.affiliation: Guangzhou Prevention and Treatment Center for Occupational Diseases, Guangzhou 510620, China.
authors.forename: Weijia
authors.initials: W
authors.lastname: Du
authors.affiliation: Guangzhou Prevention and Treatment Center for Occupational Diseases, Guangzhou 510620, China; E-mail: ymliu61@163.com.
authors.forename: Yimin
authors.initials: Y
authors.lastname: Liu
mesh_terms: D002681:China; D006801:Humans; D007221:Industry; D016272:Occupational Health / Q000706:statistics & numerical data*; D018571:Sentinel Surveillance; D011795:Surveys and Questionnaires; D017132:Workplace