National Longitudinal Study of Adolescent HealthLongitudinal StudiesAdolescent BehaviorAdolescent Health ServicesAdolescent PsychologyUnited StatesHealth StatusAdolescent MedicineHealth SurveysPeer GroupFriendsRisk-TakingHealth BehaviorSex FactorsSocioeconomic FactorsParent-Child RelationsSexual BehaviorCrime VictimsSchoolsCoitusInterpersonal RelationsLogistic ModelsQuestionnairesAlcohol DrinkingViolenceAge FactorsRisk FactorsPrevalenceDepressionJuvenile DelinquencyAdolescent DevelopmentSubstance-Related DisordersPublic HealthSelf ConceptMental HealthSiblingsEducational StatusFamily CharacteristicsObesityHealth PromotionSexual PartnersEuropean Continental Ancestry GroupSexually Transmitted DiseasesSmokingAfrican AmericansDelivery of Health CareCross-Sectional StudiesResidence CharacteristicsBody Mass IndexAttitude to HealthHispanic AmericansRegression AnalysisSocial SupportHealth PolicyMultivariate AnalysisHealth Services AccessibilityHealth Knowledge, Attitudes, PracticeHealth EducationHealth Services Needs and DemandHealth Status DisparitiesHealth Care ReformPregnancy in AdolescenceOdds RatioHealth Care SurveysNational Health ProgramsHealthSocial EnvironmentParentsNational Institutes of Health (U.S.)Primary Health CareSchool Health ServicesHealth PlanningChild WelfareQuality of Health CareParentingProspective StudiesReproductive Health ServicesHealth ServicesInsurance, HealthSocial ClassInterviews as TopicWorld HealthHealth PersonnelHealth Services ResearchSexualityCohort StudiesPregnancyHealth ExpendituresPatient Acceptance of Health CareOral HealthEthnic GroupsFollow-Up StudiesPublic Health AdministrationCourtshipSuicide, AttemptedFamilySelf ReportChild AbusePediatricsMental Health Services