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Clinical Investigations: COPD |

Validation of the Hong Kong Chinese Version of the St. George Respiratory Questionnaire in Patients With Bronchiectasis*

Shelley L. Chan, MmedSc; Moira M. Chan-Yeung, MD; Gaik C. Ooi, MD; Cindy L. Lam, MD; Tung F. Cheung, MB, PhD; Wah K. Lam, MD, FCCP; Kenneth W. Tsang, MD, FCCP
Author and Funding Information

*From the Departments of Medicine (Ms. Chan and Drs. Chan-Yeung, C.L. Lam, W.K. Lam, and Tsang), Diagnostic Radiology (Dr. Ooi), and School of Professional and Continued Education (Dr. Cheung), The University of Hong Kong, Hong Kong, Special Administrative Region.

Correspondence to: Kenneth W. Tsang, MD, FCCP, Associate Professor and Honorary Consultant Physician, University Department of Medicine, Queen Mary Hospital, The University of Hong Kong, Pokfulam, Hong Kong, Special Administrative Region; e-mail: kwttsang@hku.hk



Chest. 2002;122(6):2030-2037. doi:10.1378/chest.122.6.2030
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Study objectives: To validate the Hong Kong Chinese version of the St. George Respiratory Questionnaire (SGRQ-HK) in patients with bronchiectasis.

Design and setting: Outpatients (93 patients; 61 women; mean age [± SD], 59.0 ± 14.2 years) were assessed at baseline by the SGRQ-HK, the Hong Kong Chinese version of the 36-item short form health survey (SF-36-HK), and the hospital anxiety and depression scale (HADS). Forty randomly selected patients also were reassessed at 2 weeks for repeatability. Seventy-two patients were further reassessed at 6 months for responsiveness.

Measurements and results: Cronbach α coefficients, which reflected internal consistency, were > 0.7 for all SGRQ-HK components except for symptoms (α = 0.59), and the intraclass correlation coefficients between baseline and the 2-week follow-up visits were between 0.80 and 0.94 (p > 0.05). SGRQ-HK component scores and total scores correlated with all the component scores of the SF-36-HK and the HADS (p < 0.02). SGRQ-HK component scores and total scores correlated with the scores of the SF-36-HK and the HADS, confirming the concurrent validity. All SGRQ-HK scores correlated negatively with FEV1, FVC, and arterial oxygen saturation (p < 0.005), while the activity score correlated with the Karnofsky performance scale and the number of bronchiectatic lobes (p < 0.001). SGRQ-HK scores positively correlated with Borg scale scores, exacerbation frequency, and 24-h sputum volumes (p < 0.03). Patients with 24-h sputum volumes of ≥ 10 mL or < 10 mL had significantly different SQRG-HK component scores and total scores (p < 0.002), although this sensitivity was not displayed by scores on the HADS or the SF-36-HK. Patients with 25% reductions in 24-h sputum volumes had significant improvements in SGRQ-HK activity scores, impact scores, and total scores (p < 0.02), but not in other quality-of-life measures or clinical parameters, indicating the responsiveness of the SGRQ-HK.

Conclusion: The SGRQ-HK is a valid and sensitive instrument for determining quality of life in bronchiectasis patients.


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