AnatomyOrganismsDiseasesChemicals and DrugsAnalytical, Diagnostic and Therapeutic Techniques and EquipmentPsychiatry and PsychologyPhenomena and ProcessesDisciplines and OccupationsAnthropology, Education, Sociology and Social PhenomenaHumanitiesInformation ScienceNamed GroupsHealth CareGeographicals
Sexual BehaviorAdolescent BehaviorCoitusRisk-TakingSexual Behavior, AnimalAdolescent PsychologySexual PartnersBehavior, AnimalCopulationCondomsSexually Transmitted DiseasesUnsafe SexSexual AbstinenceAdolescent DevelopmentFeeding BehaviorQuestionnairesSocial BehaviorHealth BehaviorHIV InfectionsAdolescent Health ServicesSubstance-Related DisordersPeer GroupHomosexuality, MaleSafe SexCross-Sectional StudiesHealth Knowledge, Attitudes, PracticeRisk FactorsPrevalenceParent-Child RelationsSex FactorsStudentsAge FactorsSex EducationLongitudinal StudiesUnited StatesInterpersonal RelationsBehaviorAdolescent MedicineSexualityChild BehaviorPregnancy in AdolescenceExploratory BehaviorEjaculationHeterosexualityContraceptive Devices, MaleBisexualityAggressionContraception BehaviorSocioeconomic FactorsPreoptic AreaSocial EnvironmentReligion and SexHomosexualityAgonistic BehaviorUrban PopulationParentingAlcohol DrinkingCourtshipAdolescent PsychiatryAfrican AmericansProstitutionLogistic ModelsHealth SurveysAdolescent Nutritional Physiological PhenomenaExtramarital RelationsMotor ActivityInterviews as TopicMaternal BehaviorSchoolsAphrodisiacsChild Behavior DisordersRisk Reduction BehaviorSex CharacteristicsParentsTime FactorsAnalysis of VarianceAttitude to HealthBehavior TherapyMotivationSelf ConceptHIV SeropositivityRural PopulationSelf DisclosureViolenceSmokingConsummatory BehaviorSocial ConformityCompulsive BehaviorGender IdentityPregnancyData CollectionHealth EducationSouth AfricaSocial DesirabilityModels, PsychologicalHealth PromotionEroticaParaphiliasCohort StudiesRegression Analysis