Abstract:
BACKGROUND:Standardized proportionate mortality ratio (SPMR) was found to be 2.2 (95% CI = 1.3-3.5) for esophageal cancer (EC) among workers exposed to refractory brick dust in a large iron-steel complex in China. METHODS:A nested case-control design within a cohort of industrial workers. One hundred and twenty-five EC cases and 250 controls were identified from the death registry file. Interviews were conducted of the next of kin for past exposure information on job, domestic, and lifestyle factors. History of occupational exposure to various dusts was reconstructed from personnel files and by interviewing colleagues utilizing a job-exposure matrix. RESULTS:After adjusting for confounders, occupational exposure to silica dust was the most important risk factor among all variables investigated, with a 2.8-fold risk and a clear dose-response by length of exposure. Alcohol drinking (OR = 1.8) and coal cooking (OR = 2.0) were risk factors and high consumption of fruit diet (OR = 0.5) and meat diet (OR = 0.6) were protective factors. CONCLUSIONS:The relationship between occupational exposure to silica dust and the risk of EC found in an earlier SPMR study was confirmed. Ingestion of silica particles after lung clearance may increase the risk of EC among workers exposed to silica.
journal_name
Am J Ind Medjournal_title
American journal of industrial medicineauthors
Pan G,Takahashi K,Feng Y,Liu L,Liu T,Zhang S,Liu N,Okubo T,Goldsmith DFdoi
10.1002/(sici)1097-0274(199903)35:3<272::aid-ajim7subject
Has Abstractpub_date
1999-03-01 00:00:00pages
272-80issue
3eissn
0271-3586issn
1097-0274pii
10.1002/(SICI)1097-0274(199903)35:3<272::AID-AJIM7journal_volume
35pub_type
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