Validation of Vietnamese translation of St. George’s Respiratory Questionnaire in Vietnamese patients with chronic obstructive pulmonary disease (COPD)

Abstract

Results showed that in the pilot test, irrelevant words related to differing cultural contexts were refined. Reproducibility between two administrations of SGRQ-C was high. The Cronbach’s alpha coefficient had high values exceeding 0.7 for all components (symptom: 0.822, activity: 0.910, impact: 0.948). The intra-class correlation coefficients for total and component scores were high (ranging from 0.722 to 0.834). Conclusion: The SGRQ-C performs well as a QoL instrument in Vietnamese patients with COPD.