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Dig Dis Sci. 2004 Apr;49(4):680-7.

Quality of life in patients with subjective food hypersensitivity: applicability of the 10-item short form of the Nepean Dyspepsia Index.

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Division of Gastroenterology, Institute of Medicine, Haukeland University Hospital, Bergen, Norway.


The aim of this study was to investigate quality of life and applicability of the 10-item short form of the Nepean Dyspepsia Index (SF-NDI) in patients with subjective food hypersensitivity. Fifty-two adult patients and 120 controls were examined using three questionnaires: Quality of life Nepean Dyspepsia Index (NDI), Gastrointestinal Symptom Rating Scale (GSRS), and Ulcer Esophagitis Subjective Symptoms Scale (UESS). To document psychometric properties, 20 of the patients filled in the SF-NDI questionnaire once more 4 weeks later. Patients had poor quality of life compared with controls from health care workers or general population (P < 0.001). Scores on SF-NDI were significantly correlated with scores on the GSRS (r = 0.34, P = 0.02) and UESS (r = 0.41, P = 0.003). The SF-NDI performed very satisfactorily, with a high reliability, construct validity, and responsiveness. Patients with subjective food hypersensitivity have considerably reduced quality of life. The SF-NDI provides reliable, responsive, and clinically valid measures of quality of life in these patients.

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