Translation and validation of the Chinese version of the Gastrointestinal Quality of Life Index in patients with gastric tumor

ObjectivePatients with gastric tumor are known to have deterioration in quality of life (QOL) following surgery. However, there is no valid disease-specific self-report QOL measure for clinical practice and research designated for Chinese in Hong Kong. The current study aimed at translating and validating a Chinese version of the Gastrointestinal Quality of Life Index (C-GIQLI) for use in patients with gastric tumors after gastrectomy.MethodsA translation of the English version of the instrument was performed. The psychometric properties of the C-GIQLI were investigated using internal consistency analysis, correlational analysis, and confirmatory factor analysis in 140 Chinese patients who had undergone surgery for gastric tumor.ResultsThe C-GIQLI demonstrated good test–retest reliability, internal consistency, and a factor structure consistent with the measurement model of the European version of the instrument.ConclusionThe C-GIQLI is recommended as a valid and reliable self-report measure of QOL in patients with gastric tumor after gastrectomy.