Volume 17, Issue 9 pp. 1179-1187

Development and validation of the Diabetes Bowel Symptom Questionnaire

C. Quan

C. Quan

Department of Medicine, University of Sydney, Nepean Hospital, Sydney, Australia;

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N. J. Talley

N. J. Talley

Department of Medicine, University of Sydney, Nepean Hospital, Sydney, Australia;

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S. Cross

S. Cross

Department of Medicine, University of Sydney, Nepean Hospital, Sydney, Australia;

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M. Jones

M. Jones

Department of Medicine, University of Sydney, Nepean Hospital, Sydney, Australia;

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J. Hammer

J. Hammer

Universitätsklinik für Innere Medizin 4 des AKH Wien, Abteilung für Gastroenterologie und Hepatologie, Vienna, Austria;

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N. Giles

N. Giles

Department of Medicine, University of Adelaide, Royal Adelaide Hospital, Adelaide, Australia

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M. Horowitz

M. Horowitz

Department of Medicine, University of Adelaide, Royal Adelaide Hospital, Adelaide, Australia

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First published: 02 May 2003
Citations: 37
Professor N. J. Talley, Department of Medicine, Level 5 South Block, University of Sydney, Nepean Hospital, PO Box 63, Penrith, NSW 2751, Australia.
E-mail:
[email protected]

Summary

Background : Although gastrointestinal symptoms occur frequently, there is no validated measure of gastrointestinal symptoms in patients with diabetes mellitus.

Aim : To develop the Diabetes Bowel Symptom Questionnaire.

Methods : A questionnaire derived from previously validated symptom measures was compiled to assess all relevant gastrointestinal and diabetes items. Face and content validity were ascertained by expert review. One hundred and sixty-eight patients with diabetes mellitus completed the instrument, and reliability was evaluated by a test–re-test procedure 1 week later. Concurrent validity was evaluated by an independent physician interview (n = 33). Measures of glycaemic control (glycated haemoglobin and plasma glucose) were compared with self-reported glycaemic control on a five-point Likert scale in diabetic out-patients (n = 166).

Results : The questionnaire had adequate face and content validity. There was good to excellent test–re-test reliability for the gastrointestinal and diabetes items (median kappa: 0.63 and 0.79, respectively); concurrent validity was good to excellent (median kappa: 0.47 and 0.65, respectively), except for the items assessing the severity of gastrointestinal symptoms. Both glycated haemoglobin (P < 0.0001) and plasma glucose (P = 0.005) correlated significantly with self-reported glycaemic control.

Conclusion : The Diabetes Bowel Symptom Questionnaire appears to be a useful measure of gastrointestinal symptoms and glycaemic control in diabetes mellitus, and should have applicability in epidemiological and clinical studies.

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