QuestionnairesRisk FactorsCross-Sectional StudiesProspective StudiesCohort StudiesUnited StatesFollow-Up StudiesLongitudinal StudiesTime FactorsHealth Knowledge, Attitudes, PracticeTreatment OutcomePilot ProjectsAge FactorsInterviews as TopicAnalysis of VarianceNeuropsychological TestsFocus GroupsSex FactorsResearch SubjectsMotivationLogistic ModelsAfrican AmericansQualitative ResearchBody Mass IndexReproducibility of ResultsCognitionCase-Control StudiesSeverity of Illness IndexPatient ComplianceSmokingMagnetic Resonance ImagingAttitude to HealthPsychomotor PerformanceDepressionResearch DesignInternetRisk AssessmentHIV InfectionsPatient Education as TopicReaction TimeLinear ModelsQuality of LifeProgram EvaluationIncidenceSelf ReportCognition DisordersPatient SatisfactionPatient SelectionHealth BehaviorAttentionEmotionsRegression AnalysisData CollectionPsychiatric Status Rating ScalesDecision MakingRandomized Controlled Trials as TopicHealth PromotionDouble-Blind MethodMultivariate AnalysisExerciseObesityAgingHealth StatusOdds RatioActivities of Daily LivingChoice BehaviorEuropean Continental Ancestry GroupAffectHealth SurveysPatient ParticipationSocial SupportStress, PsychologicalMotor ActivityInterpersonal RelationsSelf ConceptEducational StatusPatient Acceptance of Health CareLife StyleCardiovascular DiseasesMass ScreeningStudentsPsychometricsJudgmentPerceptionInformed ConsentAdaptation, PsychologicalChi-Square DistributionUniversitiesSelf CareFeasibility StudiesComprehensionDietAlcohol DrinkingChronic DiseaseGreat BritainAttitude of Health PersonnelWalkingMental RecallSmoking CessationRural Population