The prospective epidemiological studies of blood pressure in high salt population of northeast Japan were investigated with life styles such as MISO soup, rice, apple, fish, milk, SAKE taken and smoking. Blood pressure of population in 3 villages was determined once or twice a year by mass surveys from 1954, 57, 58 up to 75. The transitions and the means of the personal blood pressure were calculated by regression analysis of the data obtained during entire periods. The number of person was 1127 for males and 1367 for females and response rate was 98.5 percent and the average time of determination of blood pressure for a person 12.9.

Stepwise multiple regression analyses were run with the means and transitions of systolic and diastolic blood pressure as the dependent variables and life styles of the population in 1958 as the independent variables. According to the backward stepwise method this study confirmed the positive relationship of age and SAKE drinking and the negative relationship of apple eating habits to blood pressure.