初潮年齢予測に関する試案

Abstract

This study attempted to predict Menarche age to evaluate maturative rate in primary school and junior high school periods. Ninety four longitudinal data of stature from 6 to 18 years old was obtained from health examination table, and birth height, birth weight, onset age of walking, height and weight growth amounts from birth to first grade (predictive factors) were obtained by questionnaires. Height growth amounts for a year was calculated with these longitudinal stature's data, and P, H, V (Peak Height Velocity) age was determined. Correlation and multiple correlation between Menarche age and predictive factors were computed. As the result, it was shown that correlation between Menarche age, and onset age of walking, height and weight growth amounts from birth to first grade were significant. In addition, multiple correlation between Menarche age and these three predictive factors were significant. However it was concluded that the predictive equation determined with these three predictive factors was not so exact.