Journal List > Tuberc Respir Dis > v.69(3) > 1001529

Lee, Lee, Song, Choi, Shim, Kim, Cho, Moon, Lee, and Oh: Validation of the Korean Version of Chronic Obstructive Pulmonary Disease Assessment Test (CAT) and Dyspnea-12 Questionnaire

Abstract

Background

The object of this study was to assess the validity and reliability of the Korean versions of chronic obstructive pulmonary disease assessment test (CAT) and Dyspnea-12 Questionnaire for patients with chronic pulmonary obstructive disease (COPD).

Methods

For the 127 COPD patients, we obtained the Korean versions of the 3 questionnaires being tested: St George's Respiratory Questionnaire (SGRQ), CAT, and Dyspnea-12 with spirometric measurements. To assess the validity of CAT and Dyspnea-12, their correlation with SGRQ was evaluated. To assess the reliability of CAT and Dyspnea-12, Cronbach's alpha coefficient was evaluated.

Results

The mean age of patient participants was 68.6±7.5 years; 97.6% were male. The SGRQ score was correlated with the scores of the Korean version of CAT (r=0.71, p<0.0001) and Dyspnea-12 (r=0.73, p<0.0001). The Cronbach's alpha coefficient for the CAT and Dyspnea-12 were 0.77 and 0.78, respectively.

Conclusion

The Korean versions of CAT and Dyspnea-12 were shown to be valid and reliable for the Korean COPD patients.

Figures and Tables

Figure 1
Correlation between COPD assessment test (CAT) score and St. George's Respiratory Questionnaire (SGRQ) score (r=0.71, p<0.0001; 127 patients).
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Figure 2
Correlation between Dyspnea-12 and St. George's Respiratory Questionnaire (SGRQ) (r=0.73, p<0.0001; 127 patients).
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Figure 3
Cumulative frequency distribution of COPD assessment test (CAT) score in 127 patients.
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Figure 4
Cumulative frequency distribution of Dyspnea-12 score in 127 patients.
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Table 1
Characteristics of patients
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SD: standard deviation; FEV1: forced expiratory volume in 1 second; FVC: forced vital capacity; SGRQ: St. George's Respiratory Questionnaire; CAT: COPD assessment test.

Table 2
Correlation between the questionnaires and pulmonary function in 127 patients
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FEV1: forced expiratory volume in 1 second; FVC: forced vital capacity; CAT: COPD assessment test; SGRQ: St. George's Respiratory Questionnaire.

*Correlation coefficients with p-values in parentheses.

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You Sook Cho
https://orcid.org/http://orcid.org/0000-0001-8767-2667

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