PsychometricsReproducibility of ResultsVision, LowSickness Impact ProfileVisually Impaired PersonsQuestionnairesFactor Analysis, StatisticalDisability EvaluationActivities of Daily LivingModels, StatisticalQuality of LifeFoot Deformities, AcquiredOutcome Assessment (Health Care)Cross-Cultural ComparisonHealth Status IndicatorsHealth Planning CouncilsSeverity of Illness IndexArtificial LimbsVisual AcuityVision DisordersTranslationsMotor Neuron DiseaseUpper ExtremityTranslatingCultural CharacteristicsModels, PsychologicalMobility LimitationPsychiatric Status Rating ScalesStrokeLanguageRecovery of FunctionMotor SkillsHealth StatusChronic PainData Interpretation, StatisticalPain MeasurementTaiwanCross-Sectional StudiesSelf EfficacyArthritis, RheumatoidOsteoarthritis, KneeCataract ExtractionEvaluation Studies as TopicAustraliaPrincipal Component AnalysisGermanyMultiple SclerosisDepressive DisorderNorwayInterpersonal RelationsModels, TheoreticalEuropeProbabilityGreat BritainSensitivity and SpecificityChi-Square DistributionSex FactorsLongitudinal StudiesLogistic ModelsUnited StatesTreatment OutcomeCohort StudiesAlgorithms