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  • Title: Validation of a brief symptom questionnaire (ReQuest in Practice) for patients with gastro-oesophageal reflux disease.
    Author: Rubin G, Uebel P, Brimo-Hayek A, Hey KH, Doerfler H, Heading RC.
    Journal: Aliment Pharmacol Ther; 2008 May; 27(9):846-51. PubMed ID: 18266995.
    Abstract:
    BACKGROUND: A clinical need exists for a means of assessing symptom control in patients with gastro-oesophageal reflux disease. The ReQuest questionnaire has been extensively validated for symptom assessment in both erosive and non-erosive gastro-oesophageal reflux disease but was designed for research purposes. We derived a shorter version (ReQuest in Practice) that would be more convenient for clinical practice. AIM: To validate ReQuest in Practice in patients suffering from gastro-oesophageal reflux disease. METHODS: Multicentre, non-interventional, crossover comparison. Patients completed ReQuest in Practice followed by ReQuest or vice versa. Before and after a planned endoscopy, patients completed the health-related quality of life questionnaire GERDyzer. Internal consistency and the Intraclass Correlation Coefficient were calculated. Construct validity was evaluated by correlation with ReQuest and GERDyzer. RESULTS: There was high internal consistency of ReQuest in Practice (Cronbach's alpha: 0.9) and a high Intraclass Correlation Coefficient of 0.99. The measurement error of ReQuest in Practice was 4.1. High correlation between ReQuest in Practice and ReQuest (Spearman correlation coefficient: 0.9) and GERDyzer (Spearman correlation coefficient: 0.8) demonstrated construct validity. CONCLUSIONS: ReQuest in Practice was proven to be valid and reliable. Its close correlation with ReQuest makes it a promising tool to guide the clinical management of patients across the full spectrum of both erosive and non-erosive gastro-oesophageal reflux disease.
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