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The Italian version of the 92-item Prodromal Questionnaire: Concurrent validity with the SIPS and factor analysis in a sample of 258 outpatients aged 11–36 years

Family MedicineItalian VersionPsychiatryOutcomes ResearchEducationFactor AnalysisPsychometricsClassical Test TheoryMedicine92-Item Prodromal QuestionnairePsychopathologyComorbidity