Reliability and validity of the St George's Respiratory Questionnaire for asthma
OBJECTIVE: To assess the validity and reliability of the SGRQ for a large population with asthma.
DESIGN: We used the previously developed Korean version of the SGRQ (SGRQ-K) to assess 676 asthma patients enrolled from the Cohort for Reality and Evolution of Adult Asthma in Korea study. Cronbach's α was used to assess test reliability and Pearson's correlation coefficient was used to assess the correlation between SGRQ scores and various clinical factors.
RESULTS: The total SGRQ-K score had acceptable reliability (Cronbach's α = 0.92). The total SGRQ-K score was significantly correlated with symptom duration (r = 0.157, P < 0.001), pulmonary function (% FEV1 of predicted r = −0.314, P < 0.001; % FVC of predicted r = −0.224, P < 0.001; FEV1/FVC r = −0.224, P < 0.001), asthma severity (r = 0.278, P < 0.001) and history of asthma exacerbation.
CONCLUSION: With the exception of the SGRQ-K symptoms, SGRQ-K is a reliable and valid test for evaluation of the quality of life of patients with asthma. Scores were well correlated with duration of symptoms, lung function and previous history of asthma exacerbation.
Keywords: St George's Respiratory Questionnaire; asthma; chronic obstructive pulmonary disease; reliability; validity
Document Type: Regular Paper
Affiliations: 1: Division of Allergy and Clinical Immunology, Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea; Health Promotion Center, Asan Medical Center, Seoul, Korea 2: Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea 3: Department of Allergy, Internal Medicine, Haeundae Paik Hospital, Inje University, Busan, Korea 4: Division of Allergy and Clinical Immunology, Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea; Clinical Research Center for Chronic Obstructive Airway Disease, Seoul, Korea 5: Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea 6: Division of Allergy and Clinical Immunology, Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea; and Clinical Research Center for Chronic Obstructive Airway Disease, Seoul, Korea 7: Department of Internal Medicine, Soonchunhyang University, Bucheon, Korea 8: Department of Internal Medicine, College of Medicine, Chung-Ang University, Seoul, Korea 9: Department of Clinical Epidemiology and Biostatistics, Asan Medical Center, Seoul, Korea
Publication date: 01 July 2011
The International Journal of Tuberculosis and Lung Disease (IJTLD) is for clinical research and epidemiological studies on lung health, including articles on TB, TB-HIV and respiratory diseases such as COVID-19, asthma, COPD, child lung health and the hazards of tobacco and air pollution. Individuals and institutes can subscribe to the IJTLD online or in print – simply email us at [email protected] for details.
The IJTLD is dedicated to understanding lung disease and to the dissemination of knowledge leading to better lung health. To allow us to share scientific research as rapidly as possible, the IJTLD is fast-tracking the publication of certain articles as preprints prior to their publication. Read fast-track articles.
- Editorial Board
- Information for Authors
- Subscribe to this Title
- International Journal of Tuberculosis and Lung Disease
- Public Health Action
- Ingenta Connect is not responsible for the content or availability of external websites
- Access Key
- Free content
- Partial Free content
- New content
- Open access content
- Partial Open access content
- Subscribed content
- Partial Subscribed content
- Free trial content