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The Patient-Specific Functional Scale was valid for group-level change comparisons and between-group discrimination

Between-group DiscriminationPatient-specific Functional ScalePsychiatryClinical PopulationIndividual DifferencesOutcomes ResearchPatient-reported OutcomeRehabilitationPatient-centered OutcomeMultilevel ModelingMedicineBehavior Change (Individual)Health Services ResearchGroup-level Change Comparisons