Prediction of adult stature for Japanese population: an improvement of Ali-Ohtsuki equations

The longitudinal growth of individual stature of the Tokyo Metropolitan University growth study was characterized from early childhood to adulthood. The samples used here were 483 males and 262 females. The well known double phasic growth (JPA-2) and triphasic generalized logistic (BTT) models were used through the software AUXAL 2.01 for characterizing individual growth of stature. Growth parameters were extracted from the estimated distance and velocity curves for each individual. Predicted growth parameters including predicted adult stature were selected for the development of further prediction. Six prediction equations of adult stature on growth parameters (an improvement of Ali-Ohtsuki equations) have been established for Japanese boys and girls. The preciseness of the predicted equations in the present study was found to be sufficiently greater than preciseness of the existing predicted equations.