StrokeIschemic Attack, TransientBrain IschemiaCerebrovascular DisordersRisk FactorsCerebral InfarctionCerebral HemorrhageProspective StudiesFibrinolytic AgentsFollow-Up StudiesTissue Plasminogen ActivatorTime FactorsAcute DiseaseTreatment OutcomeCardiovascular DiseasesThrombolytic TherapyCohort StudiesPredictive Value of TestsBrain InfarctionInfarction, Middle Cerebral ArteryIncidenceIntracranial HemorrhagesRecurrenceIntracranial EmbolismTomography, X-Ray ComputedCarotid StenosisRisk AssessmentPlatelet Aggregation InhibitorsSeverity of Illness IndexRetrospective StudiesIntracranial ArteriosclerosisRiskAnticoagulantsProportional Hazards ModelsAspirinCarotid Artery DiseasesIntracranial ThrombosisCerebral AngiographyAtrial FibrillationPrognosisIntracranial Arterial DiseasesComorbidityHypertensionMyocardial InfarctionMagnetic Resonance ImagingAge FactorsEndarterectomy, CarotidOdds RatioCase-Control StudiesSecondary PreventionRegistriesBiological MarkersBrainRecovery of FunctionCerebrovascular CirculationMagnetic Resonance AngiographyMultivariate AnalysisNeurologyWarfarinCerebral ArteriesCarotid ArteriesStroke, LacunarIntracranial Embolism and ThrombosisDiffusion Magnetic Resonance ImagingParesisEmbolismRandomized Controlled Trials as TopicLogistic ModelsBlood PressureCerebral RevascularizationNeuroprotective AgentsSex FactorsHydroxymethylglutaryl-CoA Reductase InhibitorsDouble-Blind MethodReperfusionUnited StatesVertebrobasilar InsufficiencyUltrasonography, Doppler, TranscranialEmergency Medical ServicesNeurologic ExaminationCarotid Artery, InternalStroke VolumeRegression AnalysisJapanDiabetes ComplicationsTiclopidinePrevalenceHospitalizationKaplan-Meier EstimateCoronary Artery DiseaseMiddle Cerebral ArteryAtherosclerosisVascular DiseasesAntihypertensive AgentsCoronary DiseaseInfarction, Posterior Cerebral ArteryIschemiaCerebral Arterial DiseasesC-Reactive ProteinArterial Occlusive Diseases