caa a22 4500 606180508 CHVBK 20210128100806.0 cr unu---uuuuu 210128e20150201xx s 000 0 eng 10.1007/s11136-014-0772-y doi (NATIONALLICENCE)springer-10.1007/s11136-014-0772-y Combination of classical test theory (CTT) and item response theory (IRT) analysis to study the psychometric properties of the French version of the Quality of Life Enjoyment and Satisfaction Questionnaire-Short Form (Q-LES-Q-SF) [Elektronische Daten] [Stéphanie Bourion-Bédès, Raymund Schwan, Jonathan Epstein, Vincent Laprevote, Alex Bédès, Jean-Louis Bonnet, Cédric Baumann] Objective: The study aimed to examine the construct validity and reliability of the Quality of Life Enjoyment and Satisfaction Questionnaire-Short Form (Q-LES-Q-SF) according to both classical test and item response theories. Method: The psychometric properties of the French version of this instrument were investigated in a cross-sectional, multicenter study. A total of 124 outpatients with a substance dependence diagnosis participated in the study. Psychometric evaluation included descriptive analysis, internal consistency, test-retest reliability, and validity. The dimensionality of the instrument was explored using a combination of the classical test, confirmatory factor analysis (CFA), and an item response theory analysis, the Person Separation Index (PSI), in a complementary manner. Results: The results of the Q-LES-Q-SF revealed that the questionnaire was easy to administer and the acceptability was good. The internal consistency and the test-retest reliability were 0.9 and 0.88, respectively. All items were significantly correlated with the total score and the SF-12 used in the study. The CFA with one factor model was good, and for the unidimensional construct, the PSI was found to be 0.902. Conclusion: The French version of the Q-LES-Q-SF yielded valid and reliable clinical assessments of the quality of life for future research and clinical practice involving French substance abusers. In response to recent questioning regarding the unidimensionality or bidimensionality of the instrument and according to the underlying theoretical unidimensional construct used for its development, this study suggests the Q-LES-Q-SF as a one-dimension questionnaire in French QoL studies. Springer International Publishing Switzerland, 2014 Quality of life nationallicence Substance abusers nationallicence Psychometric validation nationallicence Bourion-Bédès Stéphanie Service médico-psychologique régional, Metz, France aut Schwan Raymund CSAPA (Health Care Centre of Accompaniment and Prevention in Addictology), University Hospital of Nancy, Nancy, France aut Epstein Jonathan EA4360 APEMAC, University of Lorraine, Nancy, France aut Laprevote Vincent CSAPA (Health Care Centre of Accompaniment and Prevention in Addictology), University Hospital of Nancy, Nancy, France aut Bédès Alex ANPAA 15-CSAPA (Health Care Centre of Accompaniment and Prevention in Addictology), Saint-Flour, France aut Bonnet Jean-Louis ANPAA 15-CSAPA (Health Care Centre of Accompaniment and Prevention in Addictology), Aurillac, France aut Baumann Cédric EA4360 APEMAC, University of Lorraine, Nancy, France aut Quality of Life Research Springer International Publishing 24/2(2015-02-01), 287-293 0962-9343 24:2<287 2015 24 11136 https://doi.org/10.1007/s11136-014-0772-y text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s11136-014-0772-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Bourion-Bédès Stéphanie Service médico-psychologique régional, Metz, France aut NATIONALLICENCE 700 1- Schwan Raymund CSAPA (Health Care Centre of Accompaniment and Prevention in Addictology), University Hospital of Nancy, Nancy, France aut NATIONALLICENCE 700 1- Epstein Jonathan EA4360 APEMAC, University of Lorraine, Nancy, France aut NATIONALLICENCE 700 1- Laprevote Vincent CSAPA (Health Care Centre of Accompaniment and Prevention in Addictology), University Hospital of Nancy, Nancy, France aut NATIONALLICENCE 700 1- Bédès Alex ANPAA 15-CSAPA (Health Care Centre of Accompaniment and Prevention in Addictology), Saint-Flour, France aut NATIONALLICENCE 700 1- Bonnet Jean-Louis ANPAA 15-CSAPA (Health Care Centre of Accompaniment and Prevention in Addictology), Aurillac, France aut NATIONALLICENCE 700 1- Baumann Cédric EA4360 APEMAC, University of Lorraine, Nancy, France aut NATIONALLICENCE 773 0- Quality of Life Research Springer International Publishing 24/2(2015-02-01), 287-293 0962-9343 24:2<287 2015 24 11136