Open AccessValidation of the GerdQ questionnaire for the management of gastro‐oesophageal reflux disease in Japan
Author(s) -
Suzuki Hidekazu,
Matsuzaki Juntaro,
Okada Sawako,
Hirata Kenro,
Fukuhara Seiichiro,
Hibi Toshifumi
Publication year - 2013
Publication title -
ueg journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.667
H-Index - 35
eISSN - 2050-6414
pISSN - 2050-6406
DOI - 10.1177/2050640613485238
Subject(s) - medicine , reflux , concordance , disease , gastro , population , cutoff , physics , environmental health , quantum mechanics
Background The GerdQ scoring system may be a useful tool for managing gastro‐oesophageal reflux disease. However, GerdQ has not been fully validated in Asian countries. Objective To validate the Japanese version of GerdQ and to compare this version to the Carlsson‐Dent questionnaire (CDQ) in both general and hospital‐based populations. Methods The questionnaires, including the Japanese versions of GerdQ and CDQ, and questions designed to collect demographic information, were sent to a general population via the web, and to a hospital‐based population via conventional mail. The optimal cutoff GerdQ score and the differences in the characteristics between GerdQ and CDQ were assessed. Results The answers from 863 web‐responders and 303 conventional‐mail responders were analysed. When a GerdQ cutoff score was set at 8, GerdQ significantly predicted the presence of reflux oesophagitis. Although the GerdQ scores were correlated with the CDQ scores, the concordance rates were poor. Multivariate analysis results indicated that, the additional use of over‐the‐counter medications was associated with GerdQ score ≥ 8, but not with CDQ score ≥ 6. Conclusions The GerdQ cutoff score of 8 was appropriate for the Japanese population. Compared with CDQ, GerdQ was more useful for evaluating treatment efficacy and detecting patients’ unmet medical needs.