Hospitals, GeneralHospital MortalityHospitals, DistrictMortalityHospitals, TeachingRetrospective StudiesLength of StayIntensive Care UnitsHospitals, UniversityHospital CostsPatient AdmissionProspective StudiesHospitals, SpecialTime FactorsHospital Bed CapacityNursing Staff, HospitalHospitals, UrbanHospitalizationPostoperative ComplicationsEmergency Service, HospitalHospital DepartmentsAPACHEEnglandEconomics, HospitalSurgery Department, HospitalCritical IllnessHospitals, PediatricTreatment OutcomeCohort StudiesRisk FactorsIntensive CarePsychiatric Department, HospitalFollow-Up StudiesEmergenciesHospitals, PsychiatricHospital UnitsHospitals, Group PracticeUnited StatesPatient DischargeMedical AuditHospital PlanningHospitals, PrivateLogistic ModelsAge FactorsEquipment and Supplies, HospitalRisk AdjustmentCause of DeathInfant, NewbornInfant MortalityCross InfectionFinancial Management, HospitalOutpatient Clinics, HospitalRisk AssessmentSeverity of Illness IndexCardiology Service, HospitalInpatientsDiagnosis-Related GroupsPrognosisSurvival RateHospital ChargesHospital RecordsHospitals, CountyIncidenceHospitals, Low-VolumeSurvival AnalysisOutcome Assessment (Health Care)SepsisSurgical Procedures, OperativeAcute DiseaseHospitals, High-VolumeRespiration, ArtificialMyocardial InfarctionQuality of Health CareMultivariate AnalysisHospital Bed Capacity, 500 and overCritical CareHospitalsChi-Square DistributionPatient ReadmissionEpidemiologic MethodsCoronary Artery BypassBrazilGreat BritainRegistriesAge DistributionPredictive Value of TestsLibraries, HospitalComorbidityCenters for Medicare and Medicaid Services (U.S.)Sex FactorsOdds RatioAnti-Bacterial AgentsHospitals, ReligiousHospital Information SystemsReferral and ConsultationHealth Services ResearchSex DistributionAcute Kidney InjuryCardiac Surgical ProceduresQuality Indicators, Health Care