2016 年 51 巻 3 号 p. 167-172
This paper describes the background lifetime risk of mortality from non-cancer diseases, such as circulatory, respiratory, digestive, and blood diseases among the 47 prefectures of Japan. Calculations were conducted using publicly available vital statistical and national census data as of 2000, 2005, and 2010 disclosed by the Ministry of Health, Labour and Welfare and the Ministry of Internal Affairs. The annual trends and geographical characteristics of the background lifetime risk of non-cancer disease mortality as well as their variability are estimated. As an example result, the arithmetic mean and its relative standard deviation of the background lifetime risk for circulatory disease mortality in Japan were calculated to be 30.2% and 4.92%, respectively. These data are expected to be helpful when considering the future development of the system of radiological protection.