Hospital ChargesLength of StayHospital CostsFees and ChargesEconomics, HospitalHospitalizationHospitals, TeachingHospitals, UrbanHospitals, PediatricPatient DischargeCosts and Cost AnalysisUnited StatesCritical PathwaysRetrospective StudiesHealth Care CostsHealth ResourcesDiagnosis-Related GroupsEmergency Service, HospitalHospital MortalityPatient AdmissionHospitals, GeneralHospitals, UniversityMarylandDecision TreesMedicareDatabases, FactualHospitals, RuralPostoperative ComplicationsCost-Benefit AnalysisInfant, NewbornNursing Staff, HospitalWounds and InjuriesAccidents, TrafficTreatment OutcomeOutcome Assessment (Health Care)IncidenceTime FactorsHospital Bed CapacityHospitals, SpecialHospitals, DistrictHospitalsHospitals, PrivateFinancial Management, HospitalProspective StudiesMultivariate AnalysisRegression AnalysisRisk FactorsHospital PlanningRisk AssessmentCohort StudiesSeverity of Illness Index