Psychometric development of the Gastrointestinal Symptom Rating Questionnaire (GSRQ) demonstrated good validity.

Abstract

OBJECTIVES To develop and validate a gastrointestinal (GI) symptom rating questionnaire for patients with luminal GI symptoms including where no diagnosis has been made. STUDY DESIGN AND SETTING We developed and validated the Gastrointestinal Symptom Rating Questionnaire (GSRQ) in three stages: (1) item generation to identify the relevant items for scale… (More)
DOI: 10.1016/j.jclinepi.2015.03.019

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