A cohort mortality study of workers exposed to chlorinated organic solvents in Taiwan
Resource
Annals of Epidemiology 13 (9): 652-660
Journal
Annals of Epidemiology
Pages
652-660
Date Issued
2003
Date
2003
Author(s)
Chang, Yung-Ming
Tai, Chi-Fu
Yang, Sweo-Chung
Chen, Chiou-Jong
Shih, Tung-Sheng
Lin, Ruey S.
Liou, Saou-Hsing
Abstract
A retrospective cohort mortality study based on standardized mortality ratios (SMRs) was conducted to investigate the possible association between exposure to chlorinated organic solvents and various types of cancer deaths. Vital status and causes of death of study subjects were determined from January 1, 1985 to December 31, 1997 by linking cohort data with the National Mortality Database. Person-year accumulation began on the date of entry to the cohort, or January 1, 1985 (whichever came later), and ended on the closing date of the study (December 31, 1997), if alive; or the date of death. This retrospective cohort study examined cancer mortality among 86,868 workers at an electronics factory in the northern Taiwan. Using various durations of employment and latency and adjusting for age and calendar year, no significantly elevated SMR was found for any cancer in either male or female exposed workers when compared with the general Taiwanese population. In particular, the risk of female breast cancer was not found to be increased. Although ovarian cancer suggested an upward trend when analyzed by length of employment, ovarian cancer risk for the entire female cohort was not elevated. It is concluded that this study provided no evidence that exposure to chlorinated organic solvents was associated with human cancer risk.
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Type
journal article
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