HospitalizationIntensive Care UnitsIntensive CareIntensive Care Units, NeonatalIntensive Care Units, PediatricLength of StayRetrospective StudiesIntensive Care, NeonatalTreatment OutcomeRisk FactorsProspective StudiesInfant, NewbornUnited StatesPatient DischargeCohort StudiesPatient AdmissionTime FactorsIncidenceHospital MortalityPatient ReadmissionFollow-Up StudiesHospital CostsCritical IllnessHeart FailureHealth Care CostsSeverity of Illness IndexCritical CareAmbulatory CarePneumoniaChild, HospitalizedCross InfectionAge FactorsInpatientsRisk AssessmentRespiration, ArtificialComorbidityInfluenza, HumanAge DistributionEmergency Service, HospitalLogistic ModelsAcute DiseasePrognosisHospital ChargesMultivariate AnalysisSeasonsMedicareOutcome Assessment (Health Care)Databases, FactualHospitals, PsychiatricProportional Hazards ModelsCosts and Cost AnalysisCost of IllnessCost-Benefit AnalysisAPACHEDenmarkAnti-Bacterial AgentsSurvival AnalysisGastroenteritisRotavirus InfectionsBrazilSepsisInsurance, HospitalizationPoisson DistributionSex DistributionPrevalenceWounds and InjuriesHospitals, UniversityPopulation SurveillanceRespiratory Syncytial Virus InfectionsChronic DiseaseRegistriesSurvival RateMorbidityPredictive Value of TestsRegression AnalysisSex FactorsIsraelCaliforniaBronchiolitisInfant, PrematurePostoperative ComplicationsNew YorkCommunity-Acquired InfectionsRotavirus VaccinesUtilization ReviewMyocardial InfarctionOdds RatioInternational Classification of DiseasesChi-Square DistributionPulmonary Disease, Chronic ObstructiveAsthmaMonitoring, PhysiologicRiskHospitals, PediatricDeliriumPatient TransferHospitalsKaplan-Meier EstimateConfidence IntervalsItaly