PsychometricsReproducibility of ResultsVision, LowQuestionnairesDisability EvaluationFactor Analysis, StatisticalSickness Impact ProfileActivities of Daily LivingModels, StatisticalQuality of LifeOutcome Assessment (Health Care)Severity of Illness IndexVisually Impaired PersonsFoot Deformities, AcquiredCross-Cultural ComparisonHealth Status IndicatorsHealth Planning CouncilsArtificial 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 Studies