MenarchePuberty, DelayedAge FactorsPubertyPuberty, PrecociousRisk FactorsReproductive HistoryMenstruation DisturbancesMenopausePredictive Value of TestsParityMenstruationProspective StudiesBody HeightCohort StudiesFollow-Up StudiesBody Mass IndexSexual DevelopmentMultivariate AnalysisMenstrual CyclePrognosisLongitudinal StudiesLogistic ModelsRetrospective StudiesAge of OnsetQuestionnairesRegression AnalysisTime FactorsProportional Hazards ModelsCross-Sectional StudiesPregnancyContraceptives, OralLinear ModelsBreast NeoplasmsAdolescent DevelopmentTreatment OutcomeRisk AssessmentOdds RatioCase-Control StudiesGrowthSexual MaturationGravidityBirth WeightEuropean Continental Ancestry GroupGymnasticsSocioeconomic FactorsDysmenorrheaSeverity of Illness IndexIncidenceAmenorrheaPremenopauseHair PreparationsBody WeightSex FactorsPrevalenceAnthropometryMaternal AgeUnited States