title: Design and validation of a German version of the GSRS-IBS - an analysis of its psychometric quality and factorial structure
creator: Schäfer, Sarah K.
creator: Weidner, Kathrin Julia
creator: Hoppner, Jorge
creator: Becker, Nicolas
creator: Friedrich, Dana
creator: Stokes, Caroline S.
creator: Lammert, Frank
creator: Köllner, Volker
subject: 610
subject: 610 Medical sciences Medicine
description: Background: Currently, a suitable questionnaire in German language is not available to monitor the progression and evaluate the severity of irritable bowel syndrome (IBS). Therefore, this study aimed to translate the Gastrointestinal Symptom Rating Scale for Irritable Bowel Syndrome (GSRS-IBS) into German and to evaluate its psychometric qualities and factorial structure.    Methods: This study is based on a total sample of 372 participants [62.6% female, mean age = 41 years (SD = 17 years)]. 17.5% of the participants had a diagnosis of IBS, 19.9% were receiving treatment for chronic inflammatory bowel disease, 12.1% of the participants were recruited from a psychosomatic clinic, and 50.5% belonged to a control group. All participants completed the German version of GSRS-IBS (called Reizdarm-Fragebogen, RDF), as well as the Gießen Subjective Complaints List (GBB-24) and the Hospital Anxiety and Depression Scale - German version (HADS-D).    Results: The internal consistency of the RDF total scale was at least satisfactory in all subsamples (Cronbach’s Alpha between .77 and .92), and for all subscales (Cronbach’s Alpha between .79 and .91). The item difficulties (between .25 and .73) and the item-total correlations (between .48 and .83) were equally satisfactory. Principal axis analysis revealed a four-factorial structure of the RDF items, which mainly resembled the structure of the English original. Convergent validity was established based on substantial and significant correlations with the stomach-complaint scale of the GBB-24 (r = .71; p < .01) and the anxiety (r = .42; p < .01) and depression scales (r = .43; p < .01) of the HADS-D.    Conclusion: The German version of the GSRS-IBS RDF proves to be an effective, reliable, and valid questionnaire for the assessment of symptom severity in IBS, which can be used in clinical practice as well as in clinical studies.
publisher: BioMed Central
date: 2017
type: Article
type: info:eu-repo/semantics/article
type: NonPeerReviewed
format: application/pdf
identifier: https://archiv.ub.uni-heidelberg.de/volltextserverhttps://archiv.ub.uni-heidelberg.de/volltextserver/24289/1/12876_2017_Article_684.pdf
identifier: DOI:
identifier: urn:nbn:de:bsz:16-heidok-242891
identifier:   Schäfer, Sarah K. ; Weidner, Kathrin Julia ; Hoppner, Jorge ; Becker, Nicolas ; Friedrich, Dana ; Stokes, Caroline S. ; Lammert, Frank ; Köllner, Volker  (2017) Design and validation of a German version of the GSRS-IBS - an analysis of its psychometric quality and factorial structure.  BMC Gastroenterology, 17 (139).  pp. 1-8.  ISSN 1471-230X     
relation: https://archiv.ub.uni-heidelberg.de/volltextserver/24289/
rights: info:eu-repo/semantics/openAccess
rights: Please see front page of the work (Sorry, Dublin Core plugin does not recognise license id)
language: eng