National Longitudinal Study of Adolescent HealthLongitudinal StudiesAdolescent BehaviorAdolescent Health ServicesAdolescent PsychologyUnited StatesHealth SurveysHealth StatusAdolescent MedicineHealth BehaviorRisk-TakingPeer GroupFriendsSexual BehaviorSex FactorsSocioeconomic FactorsParent-Child RelationsSchoolsCrime VictimsHealth Care SurveysLogistic ModelsInterpersonal RelationsQuestionnairesCoitusPrevalenceRisk FactorsAge FactorsAlcohol DrinkingViolenceSubstance-Related DisordersDepressionCross-Sectional StudiesJuvenile DelinquencyAdolescent DevelopmentSelf ConceptEducational StatusMental HealthPublic HealthHealth PromotionFamily CharacteristicsSexual PartnersSmokingObesitySiblingsSexually Transmitted DiseasesEuropean Continental Ancestry GroupAfrican AmericansAttitude to HealthResidence CharacteristicsDelivery of Health CareBody Mass IndexHealth Knowledge, Attitudes, PracticeHispanic AmericansBehavior, AnimalRegression AnalysisMultivariate AnalysisSocial SupportHealth PolicyHealth Services AccessibilityHealth EducationFeeding BehaviorHealth Services Needs and DemandOdds RatioHealth Status DisparitiesSocial EnvironmentParentsHealth Care ReformPregnancy in AdolescenceData CollectionNational Health ProgramsHealthSocial BehaviorParentingPrimary Health CareSchool Health ServicesNational Institutes of Health (U.S.)Child WelfareProspective StudiesQuality of Health CareHealth PlanningSocial ClassHealth ServicesInsurance, HealthPregnancyPatient Acceptance of Health CareInterviews as TopicTime FactorsHealth PersonnelReproductive Health ServicesNutrition SurveysHealth Services ResearchCohort StudiesWorld HealthSexualityChild BehaviorFollow-Up StudiesSelf ReportEthnic GroupsCourtshipSuicide, Attempted