Investigation of Spatial Clustering of Biliary Tract Cancer Incidence in Osaka, Japan: Neighborhood Effect of a Printing Factory

Journal of Epidemiology
Yuri ItoTomoshige Hayashi

Abstract

In 2013, an unusually high incidence of biliary tract cancer among current or former workers of the offset color proof printing department of a printing company in Osaka, Japan, was reported. The purpose of this study was to examine whether distance from the printing factory was associated with incidence of biliary tract cancer and whether incident biliary tract cancer cases clustered around the printing factory in Osaka using population-based cancer registry data. We estimated the age-standardized incidence ratio of biliary tract cancer according to distance from this printing factory. We also searched for clusters of biliary tract cancer incidence using spatial scan statistics. We did not observe statistically significantly high or low standardized incidence ratios for residents in each area categorized by distance from the printing factory for the entire sample or for either sex. The scan statistics did not show any statistically significant clustering of biliary tract cancer incidence anywhere in Osaka prefecture in 2004-2007. There was no statistically significant clustering of biliary tract cancer incidence around the printing factory or in any other areas in Osaka, Japan, between 2004 and 2007. To date, even if some subs...Continue Reading

References

Jun 17, 2008·American Journal of Respiratory and Critical Care Medicine·Norio Kurumatani, Shinji Kumagai
Nov 11, 2008·International Journal of Health Geographics·Jin ChenAlan M Maceachren
Jan 8, 2010·Pediatric Blood & Cancer·Raid AminChatchawin Assanasen
Jan 21, 2010·Cancer Science·Hai-Rim ShinSung-Tae Hong
Mar 16, 2013·Occupational and Environmental Medicine·Shinji KumagaiGaku Ichihara
Sep 10, 2013·Japanese Journal of Clinical Oncology·Akiko IkedaHideaki Tsukuma
Jan 15, 2014·Journal of Hepato-biliary-pancreatic Sciences·Shoji KuboGinji Endo
Jul 30, 2014·Journal of Occupational Health·Kenichi YamadaGinji Endo
Aug 5, 2014·Journal of Hepato-biliary-pancreatic Sciences·Shoji KuboGinji Endo
Mar 6, 2015·Journal of Occupational Health·Tomotaka SobueGinji Endo

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