ABSTRACT
<p><b>OBJECTIVE</b>To investigate the prevalence of malignant tumor and its influencing factor among rubber workers in Hainan Province of China, and to study the high incidence of cancer and type of work.</p><p><b>METHODS</b>A retrospective cohort study on registered workers over 1 working age among partial rubber factories in Hainan Province in the period from 2005 to 2010.</p><p><b>RESULT</b>There was a remarkable difference in the incidence between nature exposed rubber group and non-exposed group (χ(2) = 52.13,P < 0.01). Occupational exposure induced a high risk in malignant tumors (OR = 2.47, P < 0.05). The incidence of tumor may be associated with occupational exposure: the longer occupational exposure time, the higher was the incidence of tumor (χ(2) = 11.40, P < 0.05).</p><p><b>CONCLUSIONS</b>The occupational exposure in rubber workers can induce a high incidence of malignant tumor.</p>
Subject(s)
Female , Humans , Male , China , Epidemiology , Neoplasms , Epidemiology , Occupational Exposure , Prevalence , Risk Factors , RubberABSTRACT
<p><b>OBJECTIVE</b>To investigate the malignancy incidence among rubber manufacture and preliminary processing industrial workers in Hainan Province of China.</p><p><b>METHODS</b>A retrospective survey was conducted on 9 farms in Hainan covering workers who got malignant tumor between January 1, 2005 and October 31, 2010.</p><p><b>RESULT</b>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.</p><p><b>CONCLUSIONS</b>Rubber industrial workers in Hainan have a higher morbidity of malignancy than other local industries. But it is similar to other areas in China.</p>