protocolSection identificationModule nctId: NCT06278532, orgStudyIdInfo id: NEGKOG, briefTitle: Validation of the Lithuanian Version of the BNSS, CDSS, and the SCoRS, statusModule overallStatus: RECRUITING, startDateStruct date: 2023-12-11, primaryCompletionDateStruct date: 2026-12-11, completionDateStruct date: 2026-12-11, studyFirstPostDateStruct date: 2024-02-26, lastUpdatePostDateStruct date: 2024-02-26, sponsorCollaboratorsModule leadSponsor name: Lithuanian University of Health Sciences, class: OTHER, descriptionModule briefSummary: This study aims to validate the Lithuanian version of the Brief Negative Symptoms Scale, Calgary Depression Scale for Schizophrenia, and Schizophrenia Cognition Rating Scale in a Lithuanian sample. This will be done by comparing results obtained from the Brief Negative Symptoms Scale, Calgary Depression Scale for Schizophrenia, and Schizophrenia Cognition Rating Scale with results obtained from the Positive and Negative Symptoms Scale, the Montgomery Asberg Depression Rating Scale, and the Montreal Cognitive Assessment test., conditionsModule conditions: Schizophrenia, conditions: Negative Symptoms in Schizophrenia, conditions: Depressive Symptoms Due to Primary Psychotic Disorder (Diagnosis), conditions: Cognitive Deficit, designModule studyType: OBSERVATIONAL, designInfo observationalModel: CASE_ONLY, timePerspective: CROSS_SECTIONAL, enrollmentInfo count: 200, type: ESTIMATED, armsInterventionsModule interventions name: Brief Negative Symptoms Scale, interventions name: The Calgary Depression Scale for Schizophrenia, interventions name: The Schizophrenia Cognition Rating Scale, outcomesModule primaryOutcomes measure: Validated Lithuanian version of the Brief Negative Symptoms Scale., primaryOutcomes measure: Validated Lithuanian version of the Calgary Depression Scale for Schizophrenia., primaryOutcomes measure: Validated Lithuanian version of the Schizophrenia Cognition Rating Scale., secondaryOutcomes measure: Correlation between negative symptoms and cognitive deficits of schizophrenia, secondaryOutcomes measure: Correlation between depressive symptoms and cognitive deficits of schizophrenia, secondaryOutcomes measure: Correlation between negative symptoms, cognitive deficits, depressive symptoms of schizophrenia and health-related quality of life, eligibilityModule sex: ALL, minimumAge: 18 Years, maximumAge: 65 Years, stdAges: ADULT, stdAges: OLDER_ADULT, contactsLocationsModule locations facility: Lithuanian University of Health Sciences Hospital Kaunas Clinics, status: RECRUITING, city: Kaunas, zip: LT-50161, country: Lithuania, contacts name: Jonas Montvidas, role: CONTACT, phone: +37066240919, email: jonas.montvidas@lsmu.lt, contacts name: Eimantas Zauka, role: CONTACT, phone: +37069220076, email: eimantas.zauka@kaunoklinikos.lt, geoPoint lat: 54.90272, lon: 23.90961, locations facility: Jonas Montvidas, status: RECRUITING, city: Kaunas, zip: LT-53137, country: Lithuania, contacts name: Jonas Montvidas, role: CONTACT, phone: +37066240919, email: jonas.montvidas@lsmu.lt, contacts name: Algirdas Musneckis, role: CONTACT, phone: +37061378748, email: algirdas.musneckis@kaunoklinikos.lt, geoPoint lat: 54.90272, lon: 23.90961, hasResults: False