National Longitudinal Study of Adolescent HealthLongitudinal StudiesAdolescent BehaviorAdolescent Health ServicesAdolescent PsychologyUnited StatesHealth SurveysHealth StatusAdolescent MedicinePeer GroupFriendsRisk-TakingSex FactorsHealth BehaviorSocioeconomic FactorsParent-Child RelationsAge FactorsSexual BehaviorCrime VictimsSchoolsRisk FactorsLogistic ModelsHealth Care SurveysInterpersonal RelationsPrevalenceCoitusAlcohol DrinkingQuestionnairesViolenceAdolescent DevelopmentSubstance-Related DisordersDepressionJuvenile DelinquencyCross-Sectional StudiesEducational StatusSelf ConceptMental HealthPublic HealthObesityFamily CharacteristicsSiblingsSmokingEuropean Continental Ancestry GroupHealth PromotionSexual PartnersBody Mass IndexAfrican AmericansSexually Transmitted DiseasesResidence CharacteristicsDelivery of Health CareAttitude to HealthHispanic AmericansRegression AnalysisMultivariate AnalysisSocial SupportHealth Knowledge, Attitudes, PracticeHealth PolicyHealth Services AccessibilityHealth EducationOdds RatioHealth Services Needs and DemandHealth Status DisparitiesSocial EnvironmentHealth Care ReformPregnancy in AdolescenceParentsNational Health ProgramsHealthData CollectionProspective StudiesPrimary Health CarePregnancySocial ClassParentingCohort StudiesNational Institutes of Health (U.S.)Child WelfareQuality of Health CareSchool Health ServicesHealth PlanningTime FactorsInsurance, HealthHealth ServicesNutrition SurveysFollow-Up StudiesReproductive Health ServicesHealth PersonnelWorld HealthInterviews as TopicHealth Services ResearchAgingEthnic GroupsPatient Acceptance of Health CareSexualityFamilyChild AbuseHealth ExpendituresSelf ReportInfant, NewbornOral Health