StrokeBrain IschemiaCerebrovascular DisordersPrimary PreventionRisk FactorsSecondary PreventionCerebral HemorrhageIschemic Attack, TransientCerebral InfarctionProspective StudiesTreatment OutcomeCenters for Disease Control and Prevention (U.S.)Time FactorsFollow-Up StudiesIncidenceFibrinolytic AgentsAcute DiseaseParesisStroke, LacunarStroke VolumeUnited StatesTissue Plasminogen ActivatorCohort StudiesRecovery of FunctionBrain InfarctionInfarction, Middle Cerebral ArteryRecurrenceAccident PreventionThrombolytic TherapyRisk AssessmentIntracranial HemorrhagesAnticoagulantsAge FactorsSeverity of Illness IndexAtrial FibrillationHeat StrokeIntracranial EmbolismRetrospective StudiesHemiplegiaRiskRandomized Controlled Trials as TopicPredictive Value of TestsAspirinTomography, X-Ray ComputedPrevalenceRegistriesHypertensionWarfarinMagnetic Resonance ImagingBrainComorbiditySex FactorsPlatelet Aggregation InhibitorsCarotid StenosisHospital UnitsCardiovascular DiseasesHIV InfectionsOdds RatioHealth EducationLogistic ModelsEndarterectomy, CarotidQuestionnairesHealth PromotionHealth Knowledge, Attitudes, PracticeMultivariate AnalysisPreventive Health ServicesCase-Control StudiesIntracranial ThrombosisRisk Reduction BehaviorPrognosisOutcome Assessment (Health Care)Double-Blind MethodNational Institute of Neurological Disorders and StrokeCerebrovascular CirculationProportional Hazards ModelsIntracranial ArteriosclerosisActivities of Daily LivingBlood PressureIntracranial Embolism and ThrombosisAge DistributionClinical Trials as TopicNeurologySex DistributionDisease Models, AnimalDisability EvaluationEmergency Medical ServicesPreventive MedicineAphasiaNeuroprotective AgentsSmokingRegression AnalysisCross-Sectional StudiesPilot ProjectsNeurologic ExaminationCerebral AngiographyEmbolismHospitalizationMagnetic Resonance AngiographyUpper ExtremityMyocardial Infarction