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Psychometric properties of the abbreviated version of the Scale to Assess Unawareness in Mental Disorder in schizophrenia.

ABSTRACT: BACKGROUND: The Scale to Assess Unawareness in Mental Disorder (SUMD) is widely used in clinical trials and epidemiological studies but more rarely in clinical practice because of its length (74 items). In clinical practice, it is necessary to provide shorter instruments. The aim of this study was to investigate the validity and reliability of the abbreviated version of the SUMD. METHODS: DESIGN: We used data from four cross-sectional studies conducted in several psychiatric hospitals in France. INCLUSION CRITERIA: a diagnosis of schizophrenia based on DSM-IV criteria. DATA COLLECTION: socio-demographic and clinical data (including duration of illness, Positive and Negative Syndrome Scale, and the Calgary Depression Scale); quality of life; SUMD. STATISTICAL ANALYSIS: confirmatory factor analyses, item-dimension correlations, Cronbach's alpha coefficients, Rasch statistics, relationships between the SUMD and other parameters. We tested two different scoring models and considered the response 'not applicable' as '0' or as missing data. RESULTS: Five hundred and thirty-one patients participated in this study. The 3-factor structure of the SUMD (awareness of the disease, consequences and need for treatment; awareness of positive symptoms; and awareness of negative symptoms) was confirmed using LISREL confirmatory factor analysis for the two models. Internal item consistency and reliability were satisfactory for all dimensions. External validity testing revealed that dimension scores correlated significantly with all PANSS scores, especially with the G12 item (lack of judgement and awareness). Significant associations with age, disease duration, education level, and living arrangements showed good discriminant validity. CONCLUSION: The abbreviated version of the SUMD appears to be a valid and reliable instrument for measuring insight in patients with schizophrenia and may be used by clinicians to accurately assess insight in clinical settings.

SUBMITTER: Michel P

PROVIDER: S-EPMC3851247 | biostudies-other | 2013

REPOSITORIES: biostudies-other

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Psychometric properties of the abbreviated version of the Scale to Assess Unawareness in Mental Disorder in schizophrenia.

Michel Pierre P Baumstarck Karine K Auquier Pascal P Amador Xavier X Dumas Rémy R Fernandez Jessica J Lancon Christophe C Boyer Laurent L

BMC psychiatry 20130922

<h4>Background</h4>The Scale to Assess Unawareness in Mental Disorder (SUMD) is widely used in clinical trials and epidemiological studies but more rarely in clinical practice because of its length (74 items). In clinical practice, it is necessary to provide shorter instruments. The aim of this study was to investigate the validity and reliability of the abbreviated version of the SUMD.<h4>Methods</h4><h4>Design</h4>We used data from four cross-sectional studies conducted in several psychiatric ...[more]

PMID: 24053640

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Project description:Positive mental health is crucial to individuals' total well-being and especially to their emotional, psychological, and social functioning. To assess the positive aspects of mental health, the Positive Mental Health Scale (PMH-scale) is being used as one of the most significant and practical short unidimensional psychological tools. However, the PMH-scale has not yet been validated for the Bangladeshi population nor has it been translated into Bangla. Therefore, the purpose of this study was to investigate the psychometric properties of the Bangla version of PMH-scale and validate it with the Brief Aggression Questionnaire (BAQ) and Brunel Mood Scale (BRUMS). The sample of the study consisted of 3145 university students (61.8% men) aged from 17 to 27 (M = 22.07, SD = 1.74) and 298 general population (53.4% men) aged from 30 to 65 (M = 41.05, SD = 7.88) of Bangladesh. The factor structure of the PMH-scale as well as measurement invariance for sex and age (age ≤30 years; age >30 years) were tested, using the confirmatory factor analysis (CFA). The CFA revealed that the originally proposed unidimensional model of PMH-scale had a good fit in the current sample which confirms factorial validity of the Bangla version of PMH-scale. The value of Cronbach's alpha (for both groups combined α = 0.85; for the student sample α = .85; and for the general sample α = .73) ensured the high internal consistency of the items. Concurrent validity of the PMH-scale was confirmed through the expected correlation with aggression (BAQ) and mood (BRUMS). The PMH-scale was also partially invariant over groups (student, general, men and women) indicating that the PMH-scale is equally applicable to student, general, men and women population. Therefore, this study tells us that the Bangla version of PMH-scale is a quick and easy-to-administer tool for assessing positive mental health in different groups of people in Bangladeshi culture. This work will also be useful for mental health studies in Bangladesh.

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Psychometric properties of the abbreviated version of the Scale to Assess Unawareness in Mental Disorder in schizophrenia.

Publications

Psychometric properties of the abbreviated version of the Scale to Assess Unawareness in Mental Disorder in schizophrenia.

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