Treatment OutcomeTime FactorsDouble-Blind MethodSurvival AnalysisDisease-Free SurvivalRetrospective StudiesFollow-Up StudiesInsurance BenefitsHealth Benefit Plans, EmployeeCost-Benefit AnalysisRandomized Controlled Trials as TopicUnited StatesRisk AssessmentClinical Trials as TopicInsurance, Pharmaceutical ServicesRisk FactorsProspective StudiesPatient SelectionQuestionnairesCost SharingQuality of LifeSocial SecurityBreast NeoplasmsPrognosisDrug Therapy, CombinationCombined Modality TherapyEvidence-Based MedicineSurvival RateDecision MakingAntineoplastic AgentsHealth Care CostsNeoplasmsAge FactorsEmployer Health CostsDrug CostsChemotherapy, AdjuvantResearch DesignAntineoplastic Combined Chemotherapy ProtocolsGreat BritainCohort StudiesDrug Administration ScheduleEligibility DeterminationMass ScreeningDecision Support Techniques