Abstract
Electrocardiographic findings in the inhabitants of the age forty and over of both sexes were compared between the inland farm village G (1, 016 persons) and that of the coastal fishing village R (1, 055 persons) in relation to different mortalities from cerebrovascular disease in the north-eastern part of Japan mainland. The ECG findings were classsified according to 9 modified system of Minnesota code of Blackburn et al. The results follow : 1) Percentage of the male subjects with normal ECG was significantly lower at the farm village H compared with those of the fishing village R. Also, for female, normal ECG was less frequently seen at the farm village, however, the difference was not significant between the two villages. 2) The frequency of the findings of high voltage among the farm villagers was almost the same level for all the age groups of both male and female, and was significantly higher compared to the fishing villagers. 3) The frequency of abnormal ST code was also higher for the farm village, but the difference between the two villages was significant only for female but not for male. 4) Downward inversion of TV1, wave was more frequently seen among the fishing villagers, however the difference between the two villages reached to the sighificance level only for female. 5 5) Frequencies of the elongated QT code, atrioventricular block code, bundle branch block code and abnormal T (C) code were increased with the advancement of age class, however, the differences between the two villages were not significant for these items.
