Journal of Occupational Health
Online ISSN : 1348-9585
Print ISSN : 1341-9145
ISSN-L : 1341-9145

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Prevalence of Bile Duct Cancer among Printing Industry Workers in Comparison with Other Industries
Etsuji OkamotoKiyotaka KikuchiGinji Endo
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JOURNAL FREE ACCESS Advance online publication

Article ID: 13-0067-BR

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Abstract

Objectives: The aim of this study was to assess the risk of developing bile duct cancer among workers in the printing industry in comparison with workers in all industries in general. Methods: Prevalence of bile duct cancer was compared between workers in the printing industry and age-standardized controls in all other industries using the claims database of the Japan Health Insurance Association, which insures workers of small-medium sized employers of all industries. Results: Young (aged 30-49) male workers in the printing industry showed an elevated but insignificant standardized prevalence rate ratio (SPRR) for bile duct cancer in comparison with workers in all other industries (SPRR, 1.78; 95%CI,0.63-5.00). The risk was higher for intrahepatic bile duct cancer but remained insignificant (SPRR,3.03; 95%CI,0.52-17.56). Conclusions: The sharply elevated risk of bile duct cancer observed among proof-printing workers of a printing factory in Osaka may not be generalizable to workers in the printing industry nationwide.

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