Journal of Isfahan Medical School

Journal of Isfahan Medical School

Linguistic Validation of the Inflammatory Bowel Disease Questionnaire-Short Form (IBDQ-9) in Iranian Population

Document Type : Original Article (s)

Authors
Ali Gholamrezaei 1
Saeid Haghdani 2
Hamidreza Shemshaki 3
Hamid Tavakoli 4
Mohammad Hassan Emami 4
1 Researcher, Medical Students Research Center, Isfahan University of Medical Sciences and Poursina Hakim Research Institute, Isfahan
2 Researcher, Medical Students Research Center, Isfahan University of Medical Sciences and Poursina Hakim Research Institute, Isfahan,
3 Medical Students Research Center, Isfahan University of Medical Sciences, Isfahan,
4 Associate Professor, Department of Gastroenterology, Isfahan University of Medical Sciences and Poursina Hakim Research Institute, Isfahan,
Abstract
Background: Quality of life is significantly reduced in patients with inflammatory bowel disease (IBD). As there was no specific instrument for assessment of quality of life of Iranian IBD patients, we aimed to linguistically validate the Inflammatory Bowel Disease Questionnaire-Short Form (IBDQ-9) in Iranian IBD patients.Methods: The IBDQ-9 was translated into Persian and culturally adapted following the standard forward-backward translation method. A sample of 100 IBD patients (50 Ulcerative Colitis and 50 Crohn’s Disease) completed the IBDQ-9, Short-Form-36 Health Survey (SF-36), Simplified Crohn’s Disease Activity Index (SCDAI), Simple Clinical Colitis Activity Index (SCCAI), and Hospital Anxiety and Depression Scale (HADS). Internal consistency was assessed using Cronbach’s alpha coefficient. To analyze the construct and discriminant validities, the IBDQ-9 and its subscales were correlated to SF-36 total and subscale scores and disease activity indices and HADS score, respectively.Finding: The Cronbachs’ alpha coefficient of the IBDQ-9 was 0.76. There was significant correlations of the IBDQ-9 score with SF-36 total (r = 0.524, P < 0.001) and subscale scores (r = 0.476 to 0.541, P < 0.001). Also there was significant correlations of the IBDQ-9 score with SCDAI (r = -0.424, p = 0.025), SCCAI (r = -0.530, P < 0.001), and depression (r = -0.417, P < 0.001) and anxiety (r = -0.362, P < 0.001) scores.Conclusion: The Persian version of the IBDQ-9 appears to be an appropriate instrument to assess quality of life of Iranian IBD patients. Further validation studies are warranted to investigate the reliability and validity of the IBDQ-9 after more editionslly.
Keywords
Inflammatory bowel disease
Quality of Life
Linguistic validation
Reliability
Validity
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Journal of Isfahan Medical School
Volume 28, Issue 123 - Serial Number 123
November and December 2011
Pages 1850-1859

  • Receive Date 25 January 2011
  • Accept Date 06 April 2022