We examined the effect of silica exposure on gastric and esophageal cancer mortality using a cancer control series in a population setting.Cases and controls were restricted to male subjects and were drawn from death certificates in the Tobi area of Japan. A control group was selected from a series of deaths due to colon cancer, and cancers of other organs. The Japanese death certificate system is comprehensive because all deaths must be reported to the local office and death certificates are written by medical doctors. Age and smoking habits adjusted the Mantel-Haenszel odds ratios were estimated.For gastric cancer, the age-, smoking-adjusted odds ratios were 1.22 (95

作者：T, Tsuda；Y, Mino；A, Babazono；J, Shigemi；T, Otsu；E, Yamamoto

来源：American journal of industrial medicine 2001 年 39卷 1期