Risk FactorsRisk AssessmentUnited StatesAge FactorsRiskProspective StudiesFollow-Up StudiesPrevalenceQuestionnairesTime FactorsTreatment OutcomeAgingCohort StudiesIncidenceCross-Sectional StudiesRetrospective StudiesGeriatric AssessmentLongitudinal StudiesHepatitis B VaccinesHIV InfectionsDiabetes Mellitus, Type 2Disabled PersonsExerciseLife StyleLogistic ModelsPilot ProjectsSex FactorsComorbidityMass ScreeningVaccinationPredictive Value of TestsDiabetes MellitusHospitalizationHealth BehaviorNeuropsychological TestsWalkingHepatitis BCognition DisordersMagnetic Resonance ImagingBody Mass IndexHealth PromotionAnalysis of VariancePrognosisObesityDepressionActivities of Daily LivingMotor ActivityCognitionPregnancySensitivity and SpecificityInfant, NewbornRecurrenceMultivariate AnalysisCardiovascular DiseasesHomeless PersonsBlood PressurePregnancy, High-RiskPopulation SurveillanceBrainSeverity of Illness IndexPatient SelectionOdds RatioPrimary PreventionPostoperative ComplicationsProportional Hazards ModelsBreast NeoplasmsDisease ProgressionBiological MarkersRegression AnalysisRisk-TakingSurvival AnalysisStrokeSocioeconomic FactorsSexual BehaviorAccidental FallsRandomized Controlled Trials as TopicAge DistributionReproducibility of ResultsPractice Guidelines as TopicCase-Control StudiesSurvival RateGenetic Predisposition to DiseaseHealth Knowledge, Attitudes, PracticeDouble-Blind MethodEarly DiagnosisMentally Ill PersonsFeasibility StudiesAnticoagulantsChronic DiseaseRisk Reduction BehaviorSmokingVisually Impaired PersonsSexually Transmitted DiseasesChinaPatient ComplianceDisease OutbreaksCoronary DiseaseChi-Square DistributionMentally Disabled PersonsProdromal Symptoms