Disability EvaluationInternational Classification of Functioning, Disability and HealthSocial SecuritySocial WelfareDisabled PersonsReproducibility of ResultsIntellectual DisabilityInsurance, DisabilityObserver VariationActivities of Daily LivingDevelopmental DisabilitiesPsychometricsQuestionnairesPensionsLearning DisordersDisabled ChildrenMentally Disabled PersonsSeverity of Illness IndexPain MeasurementQuality of LifeFactor Analysis, StatisticalTranslationsHealth Status IndicatorsLow Back PainMobility LimitationTranslatingPhysical Therapy ModalitiesHealth StatusSensitivity and SpecificityOutcome Assessment (Health Care)Chronic DiseaseCross-Sectional StudiesUnited StatesMultiple SclerosisProspective StudiesGeriatric AssessmentCross-Cultural ComparisonLanguageSickness Impact ProfileFollow-Up StudiesTreatment OutcomePainEmploymentRange of Motion, ArticularSelf-Help DevicesVeterans Disability ClaimsMusculoskeletal DiseasesLongitudinal StudiesArchitectural AccessibilityTime FactorsPredictive Value of TestsWork Capacity EvaluationCohort StudiesHealth SurveysPrevalencePhysical ExaminationRehabilitation, VocationalVideotape RecordingSick LeaveCost of IllnessPilot ProjectsInternational Classification of DiseasesNeck PainWorkers' CompensationFrail ElderlyStrokeRisk FactorsAge FactorsWalkingArthrometry, ArticularRehabilitation