A Prospective Study of Sexual Development and Growth in American Girls: The Statistics of Menarche

Key Points

• To prospectively examine the statistical distribution and chronological patterns of menarche in relation to physical growth and sexual maturation in adolescent girls.
• Prospective longitudinal cohort study evaluating developmental milestones and somatic growth parameters across female pubertal stages.
• Establishes normative statistical distributions for the age of menarche onset relative to adolescent growth trajectories.
• Characterizes the physiological sequence and timeline connecting physical growth acceleration with female sexual maturation.