Data Interpretation, StatisticalAlgorithmsModels, StatisticalSoftwareComputer SimulationSequence Analysis, ProteinSequence AlignmentModels, ChemicalProteinsReproducibility of ResultsQuestionnairesWeights and MeasuresPsychometricsTime FactorsTreatment OutcomeOutcome Assessment (Health Care)Cross-Sectional StudiesProspective StudiesQuality of LifeUnited StatesRisk FactorsSeverity of Illness IndexAnalysis of VarianceCohort StudiesSensitivity and SpecificityRegression AnalysisLongitudinal StudiesNeuropsychological TestsFollow-Up StudiesAge FactorsHealth Status IndicatorsDisability EvaluationMagnetic Resonance ImagingLinear ModelsPredictive Value of TestsFactor Analysis, StatisticalQuality Indicators, Health CareHealth StatusRetrospective StudiesPilot ProjectsSex FactorsCognitionBody Weights and MeasuresCognition DisordersPain MeasurementDouble-Blind MethodPatient SatisfactionBrainResearch DesignPsychiatric Status Rating ScalesSocioeconomic FactorsStatistics as TopicInfant, NewbornPrevalenceGreat BritainPregnancySelf ReportReference ValuesData CollectionChronic DiseaseAgingQuality of Health CareLogistic ModelsImage Processing, Computer-AssistedBiological MarkersRisk AssessmentBody Mass IndexMotor ActivityEnglandDepressionMultivariate AnalysisModels, TheoreticalQuality Assurance, Health CareStatistics, NonparametricAnxietyStress, PsychologicalModels, BiologicalHealth SurveysWalkingIncidenceSickness Impact ProfileOutcome and Process Assessment (Health Care)