title: [An investigation on the malignancy incidence among rubber industrial workers in Hainan province].
abstract: OBJECTIVE
  To investigate the malignancy incidence among rubber manufacture and preliminary processing industrial workers in Hainan Province of China.
  
  
  METHODS
  A retrospective survey was conducted on 9 farms in Hainan covering workers who got malignant tumor between January 1, 2005 and October 31, 2010.
  
  
  RESULTS
  On average there were 10 320 workers worked on the 9 farms each year. Among them, 167 cases of malignancy were found. The morbidity was 279.01 every a hundred thousand and standardized morbidity was 159.03 every a hundred thousand; In comparison, we also investigated 14228 non-rubber-industry-related workers. 94 malignancy cases were found. The morbidity was 113.91 every a hundred thousand and standardized morbidity was 64.93 every a hundred thousand. The difference was statistically significant (P<0.01) meaning that rubber industrial workers in Hainan Province had a higher possibility of getting malignancy. Top 5 types of cancer found in this study were lung cancer (17.96%), liver cancer (17.36%), stomach cancer (13.17%), rectal cancer and nasopharyngeal carcinoma. 116 cases of these five types of cancer took up 69.45% of the total.
  
  
  CONCLUSIONS
  Rubber industrial workers in Hainan have a higher morbidity of malignancy than other local industries. But it is similar to other areas in China.
authors.affiliation: Hainan Provincial Nongken General Hospital, Haiko 570206, China.
authors.forename: Zhong-ji
authors.initials: ZJ
authors.lastname: Yao
authors.forename: Yan-ping
authors.initials: YP
authors.lastname: Wang
authors.forename: Bing-bing
authors.initials: BB
authors.lastname: Zheng
authors.forename: Ying
authors.initials: Y
authors.lastname: Huang
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002681:China / Q000453:epidemiology; D005260:Female; D006801:Humans; D015994:Incidence; D008297:Male; D008875:Middle Aged; D009369:Neoplasms / Q000453:epidemiology*; D016273:Occupational Exposure; D012189:Retrospective Studies; D012408:Rubber; D055815:Young Adult
chemical_list: D012408:Rubber