Hospital MortalityMortalityIntensive Care UnitsRetrospective StudiesLength of StayHospitals, TeachingAPACHETreatment OutcomeCritical IllnessTime FactorsProspective StudiesHospitals, UniversityPatient AdmissionPostoperative ComplicationsIntensive CareHospital CostsCohort StudiesRisk FactorsFollow-Up StudiesInfant MortalityHospitals, GeneralCause of DeathUnited StatesHospital Bed CapacityLogistic ModelsRisk AssessmentRisk AdjustmentSeverity of Illness IndexSurvival AnalysisHospitals, Low-VolumeSurvival RateSepsisHospitalizationPrognosisRespiration, ArtificialHospitals, High-VolumeAge FactorsMyocardial InfarctionHospitals, UrbanHospitals, Group PracticeEpidemiologic MethodsNursing Staff, HospitalInfant, NewbornCoronary Artery BypassEmergenciesSurgery Department, HospitalMultivariate AnalysisCritical CareIncidenceEmergency Service, HospitalHospitals, PediatricEconomics, HospitalHospitalsChi-Square DistributionOutcome Assessment (Health Care)Acute DiseaseDiagnosis-Related GroupsSurgical Procedures, OperativePatient DischargeHospitals, SpecialHospitals, DistrictPredictive Value of TestsRegistriesCardiology Service, HospitalCenters for Medicare and Medicaid Services (U.S.)Acute Kidney InjuryCardiac Surgical ProceduresEnglandHospitals, PrivateQuality of Health CareChild MortalityMaternal MortalityOdds RatioMultiple Organ FailureProportional Hazards ModelsCross InfectionComorbidityHeart Valve ProsthesisSex FactorsFinancial Management, HospitalAortic AneurysmAge DistributionShock, SepticRegression AnalysisHeart Valve Prosthesis ImplantationHospital ChargesBrazilSurgical Procedures, ElectiveReoperationMedical Records Department, HospitalPneumoniaHospital PlanningMorbidityQuality Indicators, Health CareInpatientsTrauma Severity IndicesSex DistributionPatient ReadmissionRiskKaplan-Meier Estimate