Observation of the Correlation of Various Physical Characteristics in the Japanese

Abstract

The present paper is concerned with the interrelationship of measurement values among 9 factors, i. e. height, sitting height, weight, circumference of chest and arm, pulse rate, systolic and diastolic blood pressure, and pulse pressure, and is meant to determine whether or not the relationship will change as age advances. Subjects were 6, 718 male and 9, 020 female over twenty years, drawn at random from all over the country, in May 1962.The coefficients of correlation in the relationship according to sex and age are as follows:(1) Change by aging of the coefficient of correlation was demonstrated in the relationship among systolic blood pressure, diastolic blood pressure, and pulse pressure. No change was observed in other relationships.(2) With respect to the coefficient of correlation not observed in age advance, a certain constant relationship was seen among these characters, even in the case of each value of characters changed by aging.(3) With respect to the relationship among these factors, the interrelationship among height, sitting height, and weight is likely to be associated with the interrelationship among weight, circumference of chest, and circumference of arm, as a point of contact of weight. Systolic blood pressure, diastolic blood pressure, and pulse pressure are associated with weight, circumference of chest, and circumference of arm, and pulse rate slightly with systolic and diastolic blood pressure.(4) No remarkable differences were observed between male and female concerning these factors.