Paweł Wójciak1, Krystyna Górna2, Klaudia Domowicz1, Krystyna Jaracz3, Renata Szpalik2, Michał Michalak4, Janusz Rybakowski1. 1. Klinika Psychiatrii Dorosłych, Uniwersytet Medyczny w Poznaniu. 2. Zakład Pielęgniarstwa Psychiatrycznego, Uniwersytet Medyczny w Poznaniu. 3. Zakład Pielęgniarstwa Neurologicznego, Uniwersytet Medyczny w Poznaniu. 4. Katedra i Zakład Informatyki i Statystyki, Uniwersytet Medyczny w Poznaniu.
Abstract
OBJECTIVES: The aim of the study was to create a Polish version of the Self-evaluation of NegativeSymptoms (SNS) scale, to assess its internal consistency, and to make correlations between the SNS scores and the Brief Negative Symptom Scale (BNSS) scores in the group of patients with schizophrenia. MATERIAL AND METHODS: The procedure of Polish adaptation of the French-language version of the SNS scale, comprising 20 items organized in 5 subscales: asociality, blunted affect, alogia, avolition and anhedonia, was carried out. Psychometric tests were performed in 40 patients with paranoid schizophrenia (20 men and 20 women) with severity of symptoms on the Positive and Negative Syndrome Scale (PANSS) 56±16 points, receiving unchanged pharmacological treatment in the last 3 months. RESULTS: The Polish version of the SNS scale was accepted by the author of the scale, Professor Sonia Dollfus. The reliability analysis showed high values of the Cronbach's alpha coefficient for the whole scale (0.91) and for the subscales (0.61-0.85). The SNS and its subscales showed significant correlations with the total BNSS score and with the scores of the BNSS subscales, which confirms the validity of the scale. CONCLUSIONS: A statistically significant level of consistency of the whole scale and its individual domains with the results of the clinical assessment with the BNSS, speaks for the adequacy of the self - assessment of negative symptoms by a patient with schizophrenia. Good psychometric properties of the Polish version of the SNS obtained in the study can indicate its usefulness in the research on negative symptoms conducted in Poland.
OBJECTIVES: The aim of the study was to create a Polish version of the Self-evaluation of NegativeSymptoms (SNS) scale, to assess its internal consistency, and to make correlations between the SNS scores and the Brief Negative Symptom Scale (BNSS) scores in the group of patients with schizophrenia. MATERIAL AND METHODS: The procedure of Polish adaptation of the French-language version of the SNS scale, comprising 20 items organized in 5 subscales: asociality, blunted affect, alogia, avolition and anhedonia, was carried out. Psychometric tests were performed in 40 patients with paranoid schizophrenia (20 men and 20 women) with severity of symptoms on the Positive and Negative Syndrome Scale (PANSS) 56±16 points, receiving unchanged pharmacological treatment in the last 3 months. RESULTS: The Polish version of the SNS scale was accepted by the author of the scale, Professor Sonia Dollfus. The reliability analysis showed high values of the Cronbach's alpha coefficient for the whole scale (0.91) and for the subscales (0.61-0.85). The SNS and its subscales showed significant correlations with the total BNSS score and with the scores of the BNSS subscales, which confirms the validity of the scale. CONCLUSIONS: A statistically significant level of consistency of the whole scale and its individual domains with the results of the clinical assessment with the BNSS, speaks for the adequacy of the self - assessment of negative symptoms by a patient with schizophrenia. Good psychometric properties of the Polish version of the SNS obtained in the study can indicate its usefulness in the research on negative symptoms conducted in Poland.
Entities:
Keywords:
Self-evaluation of Negative Symptoms; negative symptoms; schizophrenia
Authors: S Galderisi; A Mucci; S Dollfus; M Nordentoft; P Falkai; S Kaiser; G M Giordano; A Vandevelde; M Ø Nielsen; L B Glenthøj; M Sabé; P Pezzella; I Bitter; W Gaebel Journal: Eur Psychiatry Date: 2021-02-18 Impact factor: 5.361
Authors: Paweł Wójciak; Klaudia Domowicz; Marta Zabłocka; Michał Michalak; Janusz K Rybakowski Journal: Front Psychiatry Date: 2021-12-24 Impact factor: 4.157
Authors: Sonia Dollfus; Armida Mucci; Giulia M Giordano; István Bitter; Stephen F Austin; Camille Delouche; Andreas Erfurth; W Wolfgang Fleischhacker; Larisa Movina; Birte Glenthøj; Karoline Gütter; Alex Hofer; Jan Hubenak; Stefan Kaiser; Jan Libiger; Ingrid Melle; Mette Ø Nielsen; Oleg Papsuev; Janusz K Rybakowski; Gabriele Sachs; Alp Üçok; Francesco Brando; Pawel Wojciak; Silvana Galderisi Journal: Front Psychiatry Date: 2022-01-31 Impact factor: 4.157
Authors: Krzysztof Kowalski; Bogna Bogudzińska; Bartłomiej Stańczykiewicz; Patryk Piotrowski; Tomasz Bielawski; Jerzy Samochowiec; Krzysztof Szczygieł; Piotr Plichta; Błażej Misiak Journal: J Clin Med Date: 2022-01-23 Impact factor: 4.241