Translation and validation of a Japanese version of the irritable bowel syndrome-quality of life measure (IBS-QOL-J) Public Deposited

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Creator
  • Endo, Yuka
    • Other Affiliation: Department of Psychosomatic Medicine, Tohoku University Hospital, 1-1 Seiryo, Aoba, Sendai 980-8574, Japan
  • Kanazawa, Motoyori
    • Other Affiliation: Department of Behavioral Medicine, Tohoku University Graduate School of Medicine, 2-1 Seiryo, Aoba, Sendai 980-8575, Japan
  • Whitehead, William
    • Affiliation: School of Medicine, Department of Medicine, Division of Gastroenterology and Hepatology, UNC Center for Functional GI and Motility Disorders
  • Sagami, Yasuhiro
    • Other Affiliation: Department of Psychosomatic Medicine, Tohoku University Hospital, 1-1 Seiryo, Aoba, Sendai 980-8574, Japan
  • Hongo, Michio
    • Other Affiliation: Department of Comprehensive Medicine, Tohoku University Hospital, 1-1 Seiryo, Aoba, Sendai 980-8574, Japan
  • Shinozaki, Masae
    • Other Affiliation: Department of Behavioral Medicine, Tohoku University Graduate School of Medicine, 2-1 Seiryo, Aoba, Sendai 980-8575, Japan
  • Fukudo, Shin
    • Other Affiliation: Department of Behavioral Medicine, Tohoku University Graduate School of Medicine, 2-1 Seiryo, Aoba, Sendai 980-8575, Japan
  • Palsson, Olafur S
    • Affiliation: School of Medicine, Department of Medicine, Division of Gastroenterology and Hepatology, UNC Center for Functional GI and Motility Disorders
  • Drossman, Douglas A
    • Affiliation: School of Medicine, Department of Medicine, Division of Gastroenterology and Hepatology, UNC Center for Functional GI and Motility Disorders
Abstract
  • Abstract Aims To compare quality of life (QOL) for patients with irritable bowel syndrome (IBS) between the U.S. and Japan, it is indispensable to develop common instruments. The IBS-QOL, which is widely used in Western countries, was translated into Japanese as there has been a lack of Japanese disease-specific QOL measures for IBS. Methods The original 34 items of the IBS-QOL were translated from English into Japanese through two independent forward translations, resolution, back translation, and resolution of differences. Forty nine patients who had GI symptoms but did not have any organic diseases (including 30 IBS patients diagnosed by Rome II criteria) were recruited from Tohoku University Hospital in Sendai, Japan and completed a Japanese version of the IBS-QOL (IBS-QOL-J) concomitant with a Japanese version of the IBS severity index (IBSSI-J) twice within 7–14 days. Results The IBS-QOL-J demonstrated high internal consistency (Cronbach's alpha; 0.96) and high reproducibility (intraclass correlation coefficient; 0.92, p < 0.001). Convergent analyses confirmed that the overall score of IBS-QOL-J was significantly correlated with overall severity of IBS symptoms on the IBSSI-J (r = -0.36, p = 0.01) and with the individual items on the IBSSI-J that assess interference with life in general (r = -0.47, p = 0.001) and dissatisfaction with bowel habits (r = -0.32, p < 0.05). Eight patients who reported continuous abdominal pain in the past 6 months had significantly lower scores in the IBS-QOL-J than those who did not (53.7 +- 12.7 vs. 73.6 +- 19.5, p < 0.01). Age, sex, education or marital status did not affect scores on the measure. Conclusion The IBS-QOL-J is a reliable instrument to assess the disease-specific QOL for IBS. Considering cross-cultural comparison, this measure is likely to be a valuable tool to investigate the QOL in Japanese patients with IBS.
Date of publication
Identifier
  • doi:10.1186/1751-0759-1-6
  • 17371576
Resource type
  • Article
Rights statement
  • In Copyright
Rights holder
  • Motoyori Kanazawa et al.; licensee BioMed Central Ltd.
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Journal title
  • BioPsychoSocial Medicine
Journal volume
  • 1
Journal issue
  • 1
Page start
  • 6
Language
  • English
Is the article or chapter peer-reviewed?
  • Yes
ISSN
  • 1751-0759
Bibliographic citation
  • BioPsychoSocial Medicine. 2007 Mar 03;1(1):6
Access
  • Open Access
Publisher
  • BioMed Central Ltd
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