Validation of the Arabic version of the “self-evaluation of negative symptoms” scale (SNS)

Hajj, Aline; Hallit, Souheil; Chamoun, Karam; Sacre, Hala; Obeïd, Sahar; Haddad, Chadia; Dollfus, Sonia; Khabbaz, Lydia Rabbaa

doi:10.1186/s12888-020-02647-4

Cited by 12 publications

(13 citation statements)

References 25 publications

(40 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As reported by Dollfus et al, SNS has excellent testretest reliability with the intraclass correlation coefficients (ICCs) for the total scores of the 20 items between baseline and retest being high (ICC ¼ 0.942, 95%, CI 0.883 À 0.971) [11]. Similar results had been shown in other SNS validation studies highlighting good reliability [12][13][14][15].…”

Section: Introductionsupporting

confidence: 72%

“…Good convergent and divergent validity and reliability are prerequisites of a good self-evaluation scale. SNS had statistically significant correlations with negative scores of PANSS [15], SANS, negative subscores of BPRS showing good convergent validity and insignificant correlations with positive subscores of BPRS and Clinical Global Impression (CGI) Parkinsonism scale illustrating adequate divergent validity [11,14]. As reported by Dollfus et al, SNS has excellent testretest reliability with the intraclass correlation coefficients (ICCs) for the total scores of the 20 items between baseline and retest being high (ICC ¼ 0.942, 95%, CI 0.883 À 0.971) [11].…”

Section: Introductionmentioning

confidence: 90%

“…Unique feature of SNS is that most items are verbatim statements collected from the focus group patients with schizophrenia, therefore items are focused on the internal experience of the patients. According to Dollfus et al, SNS has good psychometric properties which were replicated in multiple SNS validation studies [11][12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Validation of the lithuanian version of the self-evaluation of negative symptoms scale (SNS)

Montvidas

Adomaitienė

Leskauskas

et al. 2020

Nordic Journal of Psychiatry

Self Cite

View full text Add to dashboard Cite

Purpose: To validate the Lithuanian version of the Self-Evaluation Negative Symptoms Scale (Lith-SNS). Materials and methods: A double translation from French to Lithuanian and back was performed. We included patients from in-patient and out-patient settings that had a diagnosis of paranoid schizophrenia according to ICD-10 criteria and were screened as free from acute psychotic symptoms using the Mini International Neuropsychiatric Interview (MINI). Participants were evaluated using the Brief Psychiatric Rating Scale (BRPS) and completed the Lith-SNS scale. We measured internal consistency, convergent validity, and discriminant validity of Lith -SNS comparing its scores with BPRS negative and positive symptom subscores. Results: A total of 67 participants were evaluated. Cronbach's alpha (a) for all 20 items of Lith-SNS (a ¼ 0.82), and for the five subscores (a ¼ 0.76) showed good internal consistency. Factor analysis showed a 2-factor solution which accounted for 70.12% of the variance with the first factor accounting for 53.3% and the second factor accounting for 16.8% of the variance. Lith-SNS total scores and all five subscores significantly correlated with BPRS negative symptoms subscores showing good convergent validity. There was a correlation between the Positive subscore of BPRS and the alogia subscore of Lith-SNS (r ¼ 0.39, p ¼ 0.001), but no correlations with other subscores or the total Lith-SNS score showing adequate discriminant validity. Conclusions: Lithuanian version of SNS is a valuable tool to evaluate negative symptoms of schizophrenia with good internal consistency, convergent, and discriminant validity.

show abstract

Section: Introductionsupporting

confidence: 72%

Section: Introductionmentioning

confidence: 90%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Validation of the lithuanian version of the self-evaluation of negative symptoms scale (SNS)

Montvidas

Adomaitienė

Leskauskas

et al. 2020

Nordic Journal of Psychiatry

Self Cite

View full text Add to dashboard Cite

show abstract

“…A SNS total score threshold at 7 for the identification of the negative dimension of schizophrenia with good sensitivity and specificity has also been established (15). Arabic and Chinese versions of the SNS in patients with schizophrenia were also used showing that all items converged over a solution of five factors (16,17). Despite all these studies were conducted in different countries (France, US, Spain, Poland, China, and Lebanon) further validation studies of the SNS are necessary, particularly on larger samples and in various European Countries.…”

Section: Introductionmentioning

confidence: 99%

European Validation of the Self-Evaluation of Negative Symptoms (SNS): A Large Multinational and Multicenter Study

et al. 2022

Self Cite

View full text Add to dashboard Cite

BackgroundNegative symptoms are usually evaluated with scales based on observer ratings and up to now self-assessments have been overlooked. The aim of this paper was to validate the Self-evaluation of Negative Symptoms (SNS) in a large European sample coming from 12 countries. We wanted to demonstrate: (1) good convergent and divergent validities; (2) relationships between SNS scores and patients' functional outcome; (3) the capacity of the SNS compared to the Brief Negative Symptom Scale (BNSS) to detect negative symptoms; and (4) a five-domain construct in relation to the 5 consensus domains (social withdrawal, anhedonia, alogia, avolition, blunted affect) as the best latent structure of SNS.MethodsTwo hundred forty-five subjects with a DSM-IV diagnosis of schizophrenia completed the SNS, the Positive and Negative Syndrome Scale (PANSS), the BNSS, the Calgary Depression Scale for Schizophrenia (CDSS), and the Personal and Social Performance (PSP) scale. Spearman's Rho correlations, confirmatory factor analysis investigating 4 models of the latent structure of SNS and stepwise multiple regression were performed.ResultsSignificant positive correlations were observed between the total score of the SNS and the total scores of the PANSS negative subscale (r = 0.37; P < 0.0001) and the BNSS (r = 0.43; p < 0.0001). SNS scores did not correlate with the level of insight, parkinsonism, or the total score of the PANSS positive subscale. A positive correlation was found between SNS and CDSS (r = 0.35; p < 0.0001). Among the 5 SNS subscores, only avolition subscores entered the regression equation explaining a lower functional outcome. The 1-factor and 2-factor models provided poor fit, while the 5-factor model and the hierarchical model provided the best fit, with a small advantage of the 5-factor model. The frequency of each negative dimension was systematically higher using the BNSS and the SNS vs. the PANSS and was higher for alogia and avolition using SNS vs. BNSS.ConclusionIn a large European multicentric sample, this study demonstrated that the SNS has: (1) good psychometric properties with good convergent and divergent validities; (2) a five-factor latent structure; (3) an association with patients' functional outcome; and (4) the capacity to identify subjects with negative symptoms that is close to the BNSS and superior to the PANSS negative subscale.

show abstract

“…To date, SNS has been translated into different languages including French [16], Lithuanian [17,18], Spanish [19], Arabic [20] and Polish [21], and it has been validated with acceptable reliability and validity values. Persian, which is the official language of Iran, Afghanistan, and Tajikistan, is one of the most important languages of the Middle East and Central Asia.…”

Section: Introductionmentioning

confidence: 99%

Validity and reliability of a Persian version of the self- evaluation of negative symptoms (SNS)

et al. 2021

Self Cite

View full text Add to dashboard Cite

Aim The Self-evaluation of Negative Symptoms (SNS) has been developed to allow schizophrenia patients to evaluate themselves in five dimensions of negative symptoms. The present study aimed to examine psychometric properties of the Persian version of SNS. Methods A group of 50 patients with schizophrenia and a group of 50 healthy controls received the Persian-SNS. Severity of negative symptoms were evaluated by the Scale for Assessment of Negative symptoms (SANS) and the Brief Psychiatric Rating Scale (BPRS). Results The results showed that the Cronbach’s alpha for the Persian SNS was 0.95. The Persian-SNS and its subscales showed significant positive correlations with the total SANS score and SANS subscales as well as BPRS negative subscale, thus confirming the validity of the scale. Finally, the Persian-SNS showed the ability to discriminate patients with schizophrenia from healthy controls. Conclusion The acceptable properties of the Persian version of SNS demonstrated that it is a practical tool for screening negative symptoms in Persian-speaking schizophrenia patients.

show abstract

Validation of the Arabic version of the “self-evaluation of negative symptoms” scale (SNS)

Cited by 12 publications

References 25 publications

Validation of the lithuanian version of the self-evaluation of negative symptoms scale (SNS)

Validation of the lithuanian version of the self-evaluation of negative symptoms scale (SNS)

European Validation of the Self-Evaluation of Negative Symptoms (SNS): A Large Multinational and Multicenter Study

Validity and reliability of a Persian version of the self- evaluation of negative symptoms (SNS)

Contact Info

Product

Resources

About