Prevalence of Bile Duct Cancer among Printing Industry Workers in Comparison with Other Industries

• Published in: Journal of Occupational Health Vol. 55; no. 6; pp. 511 - 515
• Main Authors: Etsuji OKAMOTO, Kiyotaka KIKUCHI, Ginji ENDO
• Format: Journal Article
• Language: Japanese
• Published: JAPAN SOCIETY FOR OCCUPATIONAL HEALTH 01.11.2013
• ISSN: 1341-9145; 1348-9585

Abstract: Prevalence of Bile Duct Cancer among Printing Industry Workers in Comparison with Other Industries: Etsuji OKAMOTO, et al. National Institute of Public Health, Department of Health and Welfare Service Research-Objectives: The aim of this study was to assess the risk of developing bile duct cancer among workers in the other 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.