Tuberc Respir Dis.  2013 Jun;74(6):256-263.

A Validation Study for the Korean Version of Chronic Obstructive Pulmonary Disease Assessment Test (CAT)

Affiliations
  • 1Division of Pulmonary, Allergy and Critical Care Medicine, Hallym University College of Medicine, Anyang, Korea. pulmoks@hallym.ac.kr
  • 2Division of Pulmonary, Sunkyunkwan University School of Medicine, Seoul, Korea.
  • 3GlaxoSmithKline Korea, Seoul, Korea.

Abstract

BACKGROUND
Health status measure is not only important for clinical research studies but also for clinical practices of chronic obstructive pulmonary disease (COPD) patients. The objective of this study is to evaluate the validity of the Korean Version of COPD Assessment Test (CAT) in primary care clinics as well as in referral hospitals.
METHODS
Smokers or ex-smokers, aged 40 years or older, with a smoking history of >10 pack-years; and a COPD diagnosis in the past 6 months or more, were recruited from 4 primary care clinics and 2 referral hospitals. Demographic, medical, and spirometry data was collected from patients who completed the CAT and St. George Respiratory Questionnaire (SGRQ), and had their dyspnea been assessed. The primary endpoint was the correlation between of the Korean version of CAT with SGRQ in patients with COPD.
RESULTS
A total 100 patients were enrolled. The mean age and smoking amounts were 69.2+/-8.4 years and 40.6+/-22.3 pack-years, respectively. Sixty-seven percent of the patients reported at least one exacerbation in the past year. The mean CAT score was 16.9+/-8.0. The internal consistency assessed by Cronbach's alpha was 0.85. The CAT score was positively correlated with the SGRQ score (r=0.76, p<0.0001) and each component of SGRQ: symptoms, activity and impacts; r=0.68, r=0.61, and r=0.72, respectively (all p<0.0001). These positive correlations were preserved in the different groups (r=0.86, p<0.0001 in primary care clinic group; r=0.69, p<0.0001 in hospital group). The CAT score was also positively correlated to the Medical Research Council dyspnoea scale (r=0.46, p<0.0001).
CONCLUSION
The Korean version of CAT had good internal consistency and showed good correlations with SGRQ. It can be used for assessing the impacts of COPD on the patient's health including primary care setting.

Keyword

Pulmonary Disease, Chronic Obstructive; Health Status Indicators: Questionnaires

MeSH Terms

Aged
Animals
Cats
Dyspnea
Humans
Primary Health Care
Pulmonary Disease, Chronic Obstructive
Surveys and Questionnaires
Referral and Consultation
Smoke
Smoking
Spirometry
Smoke

Figure

  • Figure 1 Correlation with COPD Assessment Test (CAT) and with St. George Respiratory Questionnaire (SGRQ). (A) CAT scores and SGRQ symptoms scores. (B) CAT scores and SGRQ activity scores. (C) CAT scores and SGRQ impacts scores. (D) CAT scores and SGRQ total scores. COPD: chronic obstructive pulmonary disease.


Reference

1. Global Initiative for Chronic Obstructive Pulmonary Disease (GOLD). Global strategy for the diagnosis, management and prevent of chronic obstructive pulmonary disease [Internet]. GOLD;2011. cited 2012 Feb 22. Available from: http://www.goldcopd.org.
2. World Health Organization. The global burden of disease. 2004 update. Geneva: World Health Organization;2008.
3. Murray CJ, Lopez AD. Alternative projections of mortality and disability by cause 1990-2020: Global Burden of Disease Study. Lancet. 1997; 349:1498–1504.
4. Hwang YI, Yoo KH, Sheen SS, Park JH, Kim SH, Yoon HI, et al. Prevalence of chronic obstructive pulmonary disease in Korea: the result of Forth Korean National Health and Nutrition Examination Survey. Tuberc Respir Dis. 2011; 71:328–334.
5. Statistics Korea. Causes of death statistics in 2011 [Internet]. Daejeon: Statistics Korea;cited 2013 Jan 5. Available from: http://kostat.go.kr/portal/english/news.
6. Hwang YI, Kwon OJ, Kim YW, Kim YS, Park YB, Lee MG, et al. Awareness and impact of COPD in Korea: an epidemiologic insight survey. Tuberc Respir Dis. 2011; 71:400–407.
7. Jones P, Harding G, Wiklund I, Berry P, Leidy N. Improving the process and outcome of care in COPD: development of a standardised assessment tool. Prim Care Respir J. 2009; 18:208–215.
8. Jones PW, Harding G, Berry P, Wiklund I, Chen WH, Kline Leidy N. Development and first validation of the COPD Assessment Test. Eur Respir J. 2009; 34:648–654.
9. Jones PW, Brusselle G, Dal Negro RW, Ferrer M, Kardos P, Levy ML, et al. Properties of the COPD assessment test in a cross-sectional European study. Eur Respir J. 2011; 38:29–35.
10. Jones PW, Brusselle G, Dal Negro RW, Ferrer M, Kardos P, Levy ML, et al. Health-related quality of life in patients by COPD severity within primary care in Europe. Respir Med. 2011; 105:57–66.
11. COPD Assessment Test [Internet]. Brentford: GlaxoSmithKline;c2009. cited 2012 Feb 22. Available from: http://www.catestonline.org.
12. Kim YS, Byun MK, Jung WY, Jeong JH, Choi SB, Kang SM, et al. Validation of the Korean version of the St. George's Respiratory Questionnaire for patients with chronic respiratory disease. Tuberc Respir Dis. 2006; 61:121–128.
13. Wild D, Grove A, Martin M, Eremenco S, McElroy S, Verjee-Lorenz A, et al. Principles of good practice for the translation and cultural adaptation process for patient-reported outcomes (PRO) measures: report of the ISPOR Task Force for Translation and Cultural Adaptation. Value Health. 2005; 8:94–104.
14. Bestall JC, Paul EA, Garrod R, Garnham R, Jones PW, Wedzicha JA. Usefulness of the Medical Research Council (MRC) dyspnoea scale as a measure of disability in patients with chronic obstructive pulmonary disease. Thorax. 1999; 54:581–586.
15. Lee S, Lee JS, Song JW, Choi CM, Shim TS, Kim TB, et al. Validation of the Korean version of Chronic Obstructive Pulmonary Disease Assessment Test (CAT) and Dyspnea-12 Questionnaire. Tuberc Respir Dis. 2010; 69:171–176.
16. Park MJ, Choi CW, Kim SJ, Kim YK, Lee SY, Kang KH, et al. Survey of COPD management among the primary care physicians in Korea. Tuberc Respir Dis. 2008; 64:109–124.
17. The COPD Assessment Test: healthcare professional user guide: expert guidance on frequently asked questions [Internet]. Brentford: GlaxoSmithKline;c2009. cited 2012 Feb 22. Available from: http://www.catestonline.co.uk/.
18. Jones PW, Harding G, Wiklund I, Berry P, Tabberer M, Yu R, et al. Tests of the responsiveness of the COPD Assessment Test following acute exacerbation and pulmonary rehabilitation. Chest. 2012; 142:134–140.
19. AACR. Confronting COPD in America: executive summary [Internet]. Philadelphia: American Association for Cancer Research;cited 2012 Feb 22. Available from: http://www.aacr.org/.
Full Text Links
  • TRD
Actions
Cited
CITED
export Copy
Close
Share
  • Twitter
  • Facebook
Similar articles
Copyright © 2024 by Korean Association of Medical Journal Editors. All rights reserved.     E-mail: koreamed@kamje.or.kr