高血圧乃至脳卒中死亡と血液型に関する研究

第1報脳卒中死亡率とABO式血液型分布との関係

抄録

The relation of geographic distribution between death-rate of cerebral hemorrhage and the ABO blood-groups was examined on the observation results in each prefecture in Japan, as a part of the study on the relation of the blood-groups to hypertension. And the same observation was done on the distribution data of cerebral hamorrhage death-rate and blood-groups taken from 11 main countries in the world. The results follow.
1) It is remarkably noticed that the blood type B distributed more frequently in the area where the middle-age death-rate of cerebral hemorrhage was higher, than in the other area. Though the similar relation was found on the blood type O, it was statistically not significant.
2) On the contrary, the distribution of blood type A was clearly higher in the area where the middle-age-death-rate of cerebral hemorrhage was lower.
3) On the relation between middle-age-death-rate of cerebral hemorrhage and blood type AB, any constant tendency was not found.
4) Biochemical racial-index expressed lower value in the area where the middleage-death-rate of cerebral hemorrhage was higher, than in other area.
5) The distribution of gene p, i. e. the gene of blood type A was less, and the distribution of gene q, i. e. the gene of blood type B was more in the area where the middle-age-death-rate was higher. The relation between middle-age-death-rate of cerebral hemorrhage and the distribution of gene r, i. e. the gene of blood type O was similar that of gene q, but the relation was statistically not significant.
6) On 11 main countries in the world, it was noticed that the correlation between the corrected death rate of cerebral hemorrhage and the distribution of blood type A, B and gene q, and biochemical racial index was positivly significant, and blood type O and r showed opposite tendency.