FURTHER DATA CONCERNING THE NORMAL VARIABILITY OF THE MENSTRUAL CYCLE DURING ADOLESCENCE AND FACTORS ASSOCIATED WITH AGE OF MENARCHE

Abstract

For the past ten years the Mooseheart Laboratory for Child Research in cooperation with the Mooseheart Hospital has kept careful records concerning the menstruation of the female adolescent population. As the average Mooseheart girl remains in the community from the time of admission which is usually before puberty until graduation from high school at the average age of 18.5 years it has been possible for the Laboratory to obtain objective records of the menstrual cycles of these girls for approximately five years during the adolescent period. The first paper in this series appeared in 1940 (16). (excerpt)