National Longitudinal Study of Adolescent HealthLongitudinal StudiesAdolescent BehaviorTreatment OutcomeAdolescent Health ServicesAdolescent PsychologyRisk FactorsRandomized Controlled Trials as TopicUnited StatesTime FactorsAdolescent MedicineHealth StatusPeer GroupHealth SurveysFriendsRisk-TakingAdolescent DevelopmentSex FactorsHealth BehaviorParent-Child RelationsSocioeconomic FactorsSexual BehaviorSchoolsQuestionnairesCrime VictimsInterpersonal RelationsAge FactorsCoitusLogistic ModelsAlcohol DrinkingSubstance-Related DisordersPrevalenceViolenceDepressionSelf ConceptCross-Sectional StudiesObesityMental HealthEducational StatusJuvenile DelinquencySmokingPublic HealthHealth PromotionSiblingsAfrican AmericansBody Mass IndexFamily CharacteristicsSexually Transmitted DiseasesEuropean Continental Ancestry GroupSexual PartnersAttitude to HealthResidence CharacteristicsDelivery of Health CareHispanic AmericansPregnancy in AdolescenceRegression AnalysisSocial SupportMultivariate AnalysisHealth Knowledge, Attitudes, PracticeParentsHealth EducationHealth PolicyHealth Services AccessibilitySocial EnvironmentParentingHealth Services Needs and DemandOdds RatioAdolescent PsychiatryHealth Status DisparitiesAdolescent Nutritional Physiological PhenomenaSchool Health ServicesHealth Care ReformHealth Care SurveysHealthNational Health ProgramsProspective StudiesPrimary Health CareChild WelfareFollow-Up StudiesNational Institutes of Health (U.S.)Cohort StudiesPregnancyInterviews as TopicReproductive Health ServicesSocial ClassFamilyHealth PlanningQuality of Health CareSexualitySuicide, AttemptedEthnic GroupsSelf ReportHealth ServicesInsurance, HealthCourtshipBody ImageWorld HealthHealth PersonnelPatient Acceptance of Health CareHealth Services Research