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Validation of the Lithuanian Version of the BNSS, CDSS, and the SCoRS
Sponsor: Lithuanian University of Health Sciences
Summary
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.
Official title: Validation of the Lithuanian Version of the Brief Negative Symptoms Scale, Calgary Depression Scale for Schizophrenia, and the Schizophrenia Cognition Rating Scale
Key Details
Gender
All
Age Range
18 Years - 65 Years
Study Type
OBSERVATIONAL
Enrollment
200
Start Date
2023-12-11
Completion Date
2026-12-11
Last Updated
2024-02-26
Healthy Volunteers
Not specified
Conditions
Interventions
Brief Negative Symptoms Scale
The Lithuanian Brief Negative Symptoms scale (BNSS) version will be used and validated. BNSS is used as a modern tool for the evaluation of negative symptoms of schizophrenia. Older tools used for negative symptoms evaluation often include symptoms from other dimensions of symptoms of schizophrenia, and BNSS evaluates negative symptoms specifically. BNSS is a semi-structured interview made of 13 items. There are six subscales: anhedonia (3 items), lack of normal distress (1 item), asociality (2 items), avolition (2 items), blunted affect (3 items) and alogia (2 items).
The Calgary Depression Scale for Schizophrenia
The Lithuanian version of the CDSS will be used and validated. CDSS is a tool used to evaluate depressive symptoms, specifically for patients with schizophrenia. Often, distinguishing between depressive and negative symptoms of schizophrenia is difficult. Therefore, it is recommended to use tools designed specifically for patients with schizophrenia. CDSS is the only depression scale designed to assess depression in people with a schizophrenia syndrome disorder. It is a semi-structured interview consisting of 9 items.
The Schizophrenia Cognition Rating Scale
The Lithuanian version of the SCoRS will be used and validated. SCoRS is a 20-item interview-based assessment tool that evaluates cognitive deficits and the degree to which these deficits impair specifically in patients with schizophrenia.
Locations (2)
Lithuanian University of Health Sciences Hospital Kaunas Clinics
Kaunas, Lithuania
Jonas Montvidas
Kaunas, Lithuania