The blood pressures and heart rate, in girls, during adolescence. Biometrical constants for 1,700 cases

Abstract

In a previous paper before this Society1 the writer discussed the source and methods used in obtaining this data.The biometrical constants determined were, the correlation coefficients, means, standard deviations, each with its probable error, and the probable error of a single observation.Correlation of systolic pressure, diastolic pressure, pulse pressure and pulse rate was made with age in years, height in inches and weight in pounds. These constants were determined for six different groups of data, i. e., schoolgirls who had not reached puberty, schoolgirls who had reached puberty, total schoolgirls, schoolgirls who had reached puberty and college girls, college girls, and finally the total schoolgirl and college girl population.The numerical values of the constants will be published elsewhere and only the general conclusions given here.Conclusions:1-Blood pressure and pulse rate data for schoolgirls and college girls must be correlated separately. That for schoolgirls must further be separated into a...