Cost of illness of cerebrovascular disease in each prefecture of Japan

Abstract

　Aging speed differs among regions resulting in regional differences of the medical demand in Japan.　To calculate the social burden of each region of a specified disease would contribute to health policy making.　In this study, we developed the method to calculate the social burden of disease of each prefecture using Cost of Illness （COI） method and governmental statistics.

　Cerebrovascular disease （ICD-10:I60-I69） was selected as an object of investigation.　COI of cerebrovascular disease was about 22,503 JPY per capita, the maximum was 34,132 JPY in Kagoshima and the minimum was 16,037 JPY in Shiga.　The differences in composition of the three components of COI were also observed.

　In addition, we examined whether social factors were related to COI of cerebrovascular disease using multiple regression analysis.　Each component of COI was related to social factors such as the average length of stay （LOS） and aging rate.　It was suggested that if LOS was reduced to 5/6, the direct costs might be reduced by 16.2%