United StatesHealth Benefit Plans, EmployeeManaged Care ProgramsPrepaid Health PlansCompetitive Medical PlansFee-for-Service PlansPatient SelectionEligibility DeterminationMedicaidMedicare Part CHealth Maintenance OrganizationsInsurance Selection BiasProspective StudiesAnnual Reports as TopicInsurance, HealthDeductibles and CoinsuranceCohort StudiesCost SharingInsurance CoverageRisk FactorsState Health PlansCapitation FeeFollow-Up StudiesTime FactorsPreferred Provider OrganizationsTreatment OutcomeMedicareInsurance Claim ReviewRetrospective StudiesClinical Trials as TopicSeasonsHealth Care CostsRadiotherapy Planning, Computer-AssistedQuestionnairesAge FactorsMedical Savings AccountsHealth ExpendituresHealth Services AccessibilityHealth Services ResearchCosts and Cost AnalysisHealth Care SurveysLogistic ModelsPrevalenceMarketing of Health ServicesData CollectionChild Health ServicesInfant, NewbornProgram EvaluationRefusal to ParticipateResearch DesignMedicare Part DCenters for Medicare and Medicaid Services (U.S.)CaliforniaMinority GroupsHIV InfectionsEconomic CompetitionCost SavingsDrug CostsCross-Sectional StudiesRadiotherapy, Intensity-ModulatedRandomized Controlled Trials as TopicMultivariate AnalysisPatient Protection and Affordable Care ActModels, EconometricHospitalizationSocioeconomic FactorsMedical AssistanceRegistriesState GovernmentRisk AssessmentInsurance BenefitsMedically UninsuredCost-Benefit AnalysisCost ControlPopulation SurveillancePilot ProjectsAge DistributionPatient ParticipationMass ScreeningNeoplasmsLongitudinal StudiesPovertyRegression AnalysisOregonConsumer ParticipationSex FactorsInsurance, Health, ReimbursementNew YorkCongresses as TopicHospice CareFederal GovernmentInflation, EconomicAfrican AmericansMulticenter Studies as TopicHealth Plan ImplementationHealth Services Needs and DemandNorth CarolinaFees and ChargesOutcome Assessment (Health Care)Double-Blind Method