Social SecurityDisability EvaluationInsurance, DisabilityInternational Classification of Functioning, Disability and HealthDisabled PersonsSocial WelfareUnited States Social Security AdministrationPensionsEligibility DeterminationRehabilitation, VocationalReturn to WorkInsurance BenefitsEmploymentSick LeaveIntellectual DisabilityDevelopmental DisabilitiesActivities of Daily LivingLearning DisordersMentally Disabled PersonsDisabled ChildrenPain MeasurementQuestionnairesSeverity of Illness IndexMobility LimitationTreatment OutcomeLow Back PainQuality of LifeUnited StatesMultiple SclerosisHealth StatusChronic DiseaseFollow-Up StudiesVeterans Disability ClaimsArchitectural AccessibilitySelf-Help DevicesGeriatric AssessmentProspective StudiesHealth Status IndicatorsWorkers' CompensationPrevalencePainLongitudinal StudiesWork Capacity EvaluationCross-Sectional StudiesRetirementCohort StudiesRisk FactorsCost of IllnessMusculoskeletal DiseasesTime FactorsRehabilitationOutcome Assessment (Health Care)DyslexiaFrail ElderlyMultiple Sclerosis, Relapsing-RemittingPhysical Therapy ModalitiesHealth SurveysReproducibility of ResultsEducation, SpecialSocioeconomic FactorsInternational Classification of DiseasesAge FactorsNeck PainEducation of Intellectually DisabledMental DisordersEmployment, SupportedDepressionComorbidityStrokeCognition DisordersSocial ParticipationLogistic ModelsSex FactorsDental Care for DisabledWalkingRecovery of FunctionChronic PainBack PainRetrospective Studies