Validation of the Korean Version of the St. George's Respiratory Questionnaire for Patients with Chronic Respiratory Disease

한국어판 세인트조지 호흡기설문의 타당도와 신뢰도 검정

  • Kim, Young Sam (Department of Internal Medicine, Yonsei University College of Medicine) ;
  • Byun, Min Kwang (Department of Internal Medicine, Yonsei University College of Medicine) ;
  • Jung, Wou Young (Department of Internal Medicine, Yonsei University College of Medicine) ;
  • Jeong, Jae Hee (Department of Internal Medicine, Yonsei University College of Medicine) ;
  • Choi, Sang Bong (Department of Internal Medicine, Yonsei University College of Medicine) ;
  • Kang, Shin Myung (Department of Internal Medicine, Yonsei University College of Medicine) ;
  • Moon, Ji Ae (Department of Internal Medicine, Yonsei University College of Medicine) ;
  • Han, Jung Suk (Department of Nursing, Sahmyook University) ;
  • Nam, Chung-Mo (Department of Preventive Medicine, Yonsei University College of Medicine) ;
  • Park, Moo Suk (Department of Internal Medicine, Yonsei University College of Medicine) ;
  • Kim, Se Kyu (Department of Internal Medicine, Yonsei University College of Medicine) ;
  • Chang, Joon (Department of Internal Medicine, Yonsei University College of Medicine) ;
  • Ahn, Chul Min (Department of Internal Medicine, Yonsei University College of Medicine) ;
  • Kim, Sung Kyu (Department of Internal Medicine, Yonsei University College of Medicine)
  • 김영삼 (연세대학교 의과대학 내과학교실) ;
  • 변민광 (연세대학교 의과대학 내과학교실) ;
  • 정우영 (연세대학교 의과대학 내과학교실) ;
  • 정재희 (연세대학교 의과대학 내과학교실) ;
  • 최상봉 (연세대학교 의과대학 내과학교실) ;
  • 강신명 (연세대학교 의과대학 내과학교실) ;
  • 문지애 (연세대학교 의과대학 내과학교실) ;
  • 한숙정 (삼육대학교 간호학과) ;
  • 남정모 (연세대학교 의과대학 예방의학교실) ;
  • 박무석 (연세대학교 의과대학 내과학교실) ;
  • 김세규 (연세대학교 의과대학 내과학교실) ;
  • 장준 (연세대학교 의과대학 내과학교실) ;
  • 안철민 (연세대학교 의과대학 내과학교실) ;
  • 김성규 (연세대학교 의과대학 내과학교실)
  • Received : 2006.05.25
  • Accepted : 2006.07.11
  • Published : 2006.08.30

Abstract

Background: The "health-related quality of life" (HRQL) for patients with chronic respiratory disease has been emphasized, because chronic respiratory disease (CRD) is chronic and progressive, and it finally causes disability. HRQL instruments may be useful for monitoring patients' progress or for determining the most appropriate choice of treatment. We describe the adapting St George's Respiratory Questionnaire (SGRQ), which is a self-administered questionnaire developed by Jones et al. (1991), into the Korean version for covering three domains of health for the patients suffering with airways disease. Method: We obtained the original SGRQ from the author after gaining permission. For adaptation, we created an expert panel and translated the original questionnaire into Korean language. The translated questionnaire was then back-translated by bilingual experts and we compared it with the original questionnaire. After correction and feasibility testing, 74 patients with chronic respiratory disease (COPD, asthma, destroyed lung) completed the Korean version of the SGRQ. The clinical status of each patients was evaluated concurrently with measurement of their health status. Result: The Korean version of the SGRQ was acceptable and easy to understand. Cronbach's alpha reliability coefficient was 0.92 for the overall scale and 0.63 for the "Symptoms", subscale, 0.87 for the "Activity", subscale, and 0.89 for the "Impacts" subscales. The correlation coefficients between the overall score and the Borg scale score, oxygen saturation, and forced expiratory volume in one second ($FEV_1$) were 0.52, -0.32 and -0.26, respectively. These results support that the Korean SGRQ was correlated with other measurements. Conclusion: The Korean SGRQ was reliable and valid for patients with chronic respiratory disease, such as COPD, asthma, and destroyed lung. The SGRQ score was well correlated with other respiratory measurements as well. Although further studies should complete the adaptation work, our results suggest that the SGRQ may be used in Korea and also for international studies involving Korean CRD patients.

연구배경: 만성폐질환 환자에서 삶의 질을 측정하는 도구로서 세인트조지 호흡기 설문(St George's Respiratory Questionnaire;SGRQ)이 개발되어 치료효과를 판정하는 측정지표로 널리 사용되고 있으나 영어권국가에서 만들어 졌기 때문에 우리나라에서 동일하게 사용하는데 제한점을 가지고 있다. 따라서 이의 정확한 적용을 위해서 언어, 기술, 개념적인 관점을 고려하여 한국어 설문지를 만들고 이들의 타당도와 신뢰도를 평가하였다. 방 법: 한국판 세인트조지 호흡기 설문은 번역, 역번역, 전문가 패널의 수정을 통해 완성되었고, 세브란스병원 호흡기내과를 방문한 환자를 대상으로 하여 이 설문을 시행하였다. 신뢰도 검정은 Cronbach's $\alpha$를 구하여 측정하였고 타당도는 폐기능검사, 6분보행검사, 호흡곤란지수와 산소포화도 검사를 동시에 시행하여 설문 검사결과와의 상관관계를 알아보았다. 결 과: 74명의 환자를 대상으로 시행하였으며, 남녀 비는 2.2:1, 평균연령은 $63.8{\pm}10.3$세였다. 이 중 천식환자는 27명(36.5%), 만성폐쇄성폐질환 환자는 39명 (52.7%)이었고, 결핵에 의한 파괴 폐환자는 8명(10.8%)이었다. Cronbach's ${\alpha}$ 값은 증상영역, 활동영역, 영향영역 및 총 점수에서 각각 0.63, 0.87, 0.89, 0.92 이였다. 총점수와 $FEV_1$, FVC, 6분보행거리, 산소포화도, 호흡곤란지수와 유의한 상관관계를 보였다. 결 론: 한국어판 세인트조지 호흡기 설문은 만성폐질환 및 천식과 같은 만성폐질환 환자에서 신뢰도가 높았고 총점수와의 상관관계는 6분보행검사 및 산소포화도에서 높음을 알수 있었고 폐기능 검사와의 상관계수는 원저인 세인트조지 호흡기설문 및 타 국가의 번역본 호흡기설문에서와 같이 높지 않음을 알 수 있었다. 따라서 우리나라에서도 호흡기질환의 삶의 질에 대한 치료효과 판정에 활용할 수 있을 것으로 기대된다.

Keywords

References

  1. Curtis JR, Martin DP, Nartin TR. Patient-assessed health outcomes in chronic lung disease: what are they, how do they help us, and where do we go from here? Am J Respir Crit Care Med 1997;156:1032-9 https://doi.org/10.1164/ajrccm.156.4.97-02011
  2. Jones PW, Quirk FH, Baveystock CM, Littlejohns P. A self-complete measure of health status for chronic airflow limitation. Am Rev Respir Dis 1992;145: 1321-7 https://doi.org/10.1164/ajrccm/145.6.1321
  3. Jones PW, Bosh TK. Quality of life changes in COPD patients treated with salmeterol. Am J Respir Crit Care Med 1997;155:1283-9 https://doi.org/10.1164/ajrccm.155.4.9105068
  4. Curtis JR, Deyo RA, Hudson LD. Health related quality of life among patients with chronic obstructive pulmonary disease. Thorax 1994;49:162-70 https://doi.org/10.1136/thx.49.2.162
  5. Jones PW, Baveystock CM, Littlejohns P. Relationships between general health measured with the sickness impact profile and respiratory symptoms, physiological measures, mood in patients with chronic airflow limitation. Am Rev Respir Dis 1989;140: 1538-43 https://doi.org/10.1164/ajrccm/140.6.1538
  6. Pauwels RA, Buist AS, Calverley PM, Jenkins CR, Hurd SS. Global strategy for the diagnosis, management, and prevention of chronic obstructive pulmonary disease: NHLBI/WHO Global Initiative for Chronic Obstructive Lung Disease (GOLD) workshop summary. Am J Respir Crit Care Med 2001;163: 1256-76 https://doi.org/10.1164/ajrccm.163.5.2101039
  7. Ferrer M, Allonso J, Prieto L, Plaza V, Monso E, Marrades R, et al. Validity and reliability of the St George's Respiratory Questionnaire after adaptation to a different language and culture: the Spanish example. Eur Respir J 1996;9:1160-6 https://doi.org/10.1183/09031936.96.09061160
  8. Chan SL, Chan-Yeung MM, Ooi GC, Lam CL, Cheung TF, Lam WK, et al. Validation of the Hong Kong Chinese version of the St. George Respiratory Questionnaire in patients with bronchiectasis. Chest 2002: 122:2030-7 https://doi.org/10.1378/chest.122.6.2030
  9. Tu SP, Mcdonell MB, Spertus JA, Steele BG, Fihn SD. A new self-administered questionnaire to monitor health-related quality of life in patients with COPD. Chest 1997;112:614-22 https://doi.org/10.1378/chest.112.3.614
  10. Prieto L, Alonso J, Ferrer M, Anto JM. Are results of the SF-36 health survey and the Nottingham Health Profile similar?: a comparison in COPD patients. J Clin Epidemiol 1997;50:463-73 https://doi.org/10.1016/S0895-4356(96)00420-9
  11. Ferrer M, Alonso J, Prieto L, Plaza V, Monso E, Marrades R, et al. Validity and reliability of the St George's Respiratory Questionnaire after adaptation to a different language and culture:the spanish example. Eur Respir J 1996;9:1160-6 https://doi.org/10.1183/09031936.96.09061160
  12. Curtis JR, Patrick DL. The assessment of health status among patients with COPD. Eur Respir J Suppl 2003;41:36s-45s
  13. Engstrom CP, Persson LO, Larsson S, Ryden A, Sullivan M. Functional status and well being in chronic obstructive pulmonary disease with regard to clinical parameters and smoking: a descriptive and comparative study. Thorax 1996;51:825-30 https://doi.org/10.1136/thx.51.8.825
  14. Rutter-van Molken M, Roos B, van Noord JA. An empirical comparison of the St. George's Respiratory Questionnaire (SGRQ) and the Chronic Respiratory Disease Questionnaire (CRQ) in a clinical trial setting. Thorax 1999;54:995-1003 https://doi.org/10.1136/thx.54.11.995
  15. Okubadejo AA, Jones PW, Wedzicha JA. Quality of life in patients with chronic obstructive pulmonary disease and severe hypoxaemia. Thorax 1996:51:44-7 https://doi.org/10.1136/thx.51.1.44
  16. Carone M, Bertolotti G, Anchisi F, Zotti AM, Donner CF, Jones PW. Analysis of factors that characterize health impairement in patients with chronic respiratory failure. Eur Respir J 1999;13:1293-300 https://doi.org/10.1183/09031936.99.13613019