Adolescent BehaviorAdolescent PsychologyResearchAdolescent DevelopmentAdolescent Health ServicesResearch Support as TopicAdolescent MedicineResearch DesignEthics, ResearchResearch PersonnelAdolescent PsychiatryQuestionnairesAdolescent Nutritional Physiological PhenomenaNursing ResearchParent-Child RelationsPeer GroupUnited StatesCross-Sectional StudiesHealth Services ResearchAge FactorsLongitudinal StudiesSubstance-Related DisordersPregnancy in AdolescenceParentsTranslational Medical ResearchSex FactorsRisk FactorsSchoolsGenetic ResearchParentingRisk-TakingFriendsInterpersonal RelationsSocial EnvironmentSelf ConceptObesityQualitative ResearchSocioeconomic FactorsStudentsSexual BehaviorClinical Nursing ResearchPrevalenceScoliosisAlcohol DrinkingBehavioral ResearchBody Mass IndexSmokingFamilyDepressionDental ResearchCommunity-Based Participatory ResearchFamily RelationsAfrican AmericansHealth Knowledge, Attitudes, PracticeBody ImageHealth SurveysFamily TherapyViolenceAttitude to HealthMarijuana AbuseAttitudeUrban PopulationPubertyHealth BehaviorConduct DisorderAdaptation, PsychologicalMental DisordersData CollectionMotor ActivityReproducibility of ResultsLogistic ModelsTime FactorsPsychometricsTreatment OutcomeMotivationFollow-Up StudiesHealth PromotionInternal-External ControlSocial BehaviorAnalysis of VarianceInterviews as TopicModels, PsychologicalMother-Child RelationsSelf ReportSocial AdjustmentCohort StudiesSocial IdentificationRegression AnalysisMothersPsychiatric Status Rating ScalesSchool Health ServicesBrazilHuman ExperimentationMotion Pictures as TopicHispanic AmericansSex EducationStress, PsychologicalChild of Impaired ParentsSocial SupportPregnancy