PsychometricsReproducibility of ResultsQuestionnairesSickness Impact ProfileVision, LowDisability EvaluationFactor Analysis, StatisticalVisually Impaired PersonsActivities of Daily LivingModels, StatisticalQuality of LifeOutcome Assessment (Health Care)Health Status IndicatorsSeverity of Illness IndexFoot Deformities, AcquiredCross-Cultural ComparisonHealth Planning CouncilsSensitivity and SpecificityVisual AcuityTime FactorsArtificial LimbsVision DisordersCross-Sectional StudiesTranslationsData Interpretation, StatisticalProspective StudiesPain MeasurementTreatment OutcomeUpper ExtremityAlgorithmsObserver VariationMotor Neuron DiseaseEvaluation Studies as TopicTranslatingModels, TheoreticalRecovery of FunctionModels, PsychologicalStrokeHealth StatusCultural CharacteristicsMobility LimitationReference ValuesPsychiatric Status Rating ScalesEquipment DesignLanguageRetrospective StudiesCohort StudiesCalibrationUnited StatesArthritis, RheumatoidMotor SkillsAustraliaLongitudinal StudiesChronic PainModels, BiologicalSex FactorsOsteoarthritis, KneeGermanyPredictive Value of TestsImage Processing, Computer-AssistedKineticsBiological Markers