Comparison of face-to-face interview and telephone interview administration of COPD assessment test: a randomized study
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To assess the measurement properties of the COPD assessment test (CAT) in a randomized trial comparing a face-to-face interview (FFI) with a telephone interview (TI).
A randomized study was conducted at two teaching hospitals in Fortaleza, Brazil. Patients were randomly assigned to answer the CAT questionnaire either in a FFI or by TI. The two groups were assessed for internal consistency reliability, cross-sectional validity and test–retest reliability. All patients performed spirometry and answered the modified medical research council dyspnea scale and the St. George’s respiratory questionnaire (SGRQ).
The total scores of the CAT questionnaire were similar for face-to-face and TI groups, 20.71 (95 % CI 18–23.4) versus 20.81 (95 % CI 19.31–21.7), respectively. For both mode of administration, we found good internal consistency reliability, the Cronbach’s alpha ranged from 0.74 (95 % CI 0.61–0.84) to 0.89 (95 % CI 0.84–0.93) for the TI and FFI, respectively. In general, moderate-to-high correlations of CAT with SGRQ were observed, independent of the administration format. For the test–retest reliability, the intraclass correlation coefficients were very similar for both FFI and TI group 0.96 (95 % CI 0.93–0.97) versus 0.98 (95 % CI 0.96–0.98), respectively.
This study demonstrated that the CAT questionnaire administration either in a FFI or by TI presents moderate-to-high measurement properties. This provides support for the use of both modes of questionnaire administration.
KeywordsHealth status COPD assessment test (CAT) Face-to-face interview questionnaire Telephone interview questionnaire
We thank Dr. McTaggart-Cowan for her generous assistance on language and grammar. The authors wish to thank MCT/CNPq for support of this study.
- 1.The Global Initiative for Chronic Obstructive Lung disease (GOLD). (2008) Executive summary: Global strategy for the diagnosis, management, and prevention of COPD. Medical communications resources, Available from www.goldcopd.com.
- 4.Mackay, A. J., Donaldson, G. C., Patel, A. R., Jones, P. W., Hurst, J. R., & Wedzicha, J. A. (2012). Usefulness of the chronic obstructive pulmonary disease assessment test to evaluate severity of COPD exacerbations. American Journal of Respiratory and Critical Care Medicine, 1(85), 1218–1224.CrossRefGoogle Scholar
- 5.Ghobadi, H., Ahari, S. S., Kameli, A., & Lari, S. M. (2012). The relationship between COPD assessment test (CAT) scores and severity of airflow obstruction in stable COPD patients. Tanaffos, 11, 22–26.Google Scholar
- 7.Tourangeau. R., Rips, L. J., & Rasinski, K. (2000). The psychology of survey response. In Chapter 10: Mode of data collection. (pp. 289–312) Cambridge: Cambridge University Press.Google Scholar
- 9.Wiklund, I., Berry, P., Lu, K. X., Fang, J., & Fu, C. (2010). The Chinese translation of COPD assessment test™ (CAT) provides a valid and reliable measurement of COPD health status in Chinese COPD patients. American Journal of Respiratory and Critical Care Medicine, 181, A3575.Google Scholar
- 11.Moreira, G. L., Pitta, F., Ramos, D., Nascimento, C. S. C., Barzon, D., Kovelis, D., et al. (2009). Portuguese-language version of the chronic respiratory questionnaire: A validity and reproducibility study. Brazilian Journal of Pneumology, 35, 737–744.Google Scholar
- 12.Silva, P. N. C., Jardim, J. R., Souza, G. M. C., Hyland, M. E., & Nascimento, O. A. (2012). Cultural adaptation and reproducibility of the breathing problems questionnaire for use in patients with COPD in Brazil. Brazilian Journal of Pneumology, 38, 339–345.Google Scholar
- 13.Pinto, J. M. S., González, J. R., Arenillas, J. I. C., Nogueras, A. M. M., & Gómez, F. P. (2010). Quality of life related to health of patients with chronic obstructive pulmonary disease and asthma assessed by SGRQ. Portuguese Journal of Pneumology, 16, 543–558.Google Scholar
- 15.Puhan, M., Behnke, M., Frey, M., Grueter, T., Brandli, O., Lichtenschopf, A., et al. (2004). Self-administration and interviewer-administration of the German Chronic Respiratory Questionnaire: instrument development and assessment of validity and reliability in two randomised studies. Health and Quality of Life Outcomes, 2, 1–29.PubMedCentralPubMedCrossRefGoogle Scholar
- 16.Kovelis, D., Segretti, N. O., Probst, S., Lareau, S. C., Brunetto, A. F., & Pitta, F. (2008). Validação do Modified Pulmonary Functional Status and Dyspnea Questionnaire e da escala do Medical Research Council para o uso em pacientes com doença pulmonar obstrutiva crônica no Brasil. Brazilian Journal of Pneumology, 35(8), 737–744.Google Scholar
- 21.Tsiligianni, I. G., der Molen, T., Moraitaki, D., Lopez, I., Kocks, J. W. H., Karagiannis, K., et al. (2012). Assessing health status in COPD. A head-to-head comparison between the COPD assessment test (CAT) and the clinical COPD questionnaire (CCQ). BMC Pulmonary Medicine, 12, 20–29.PubMedCentralPubMedCrossRefGoogle Scholar
- 22.Cook, D. J., Guyatt, G. H., Juniper, E., Griffith, L., McIlroy, W., Willan, A., et al. (1993). Interviewer versus self-administered questionnaires in developing a disease-specific, health-related quality of life instrument for asthma. Journal of Clinical Epidemiology, 46, 529–534.PubMedCrossRefGoogle Scholar
- 24.Education at a Glance 2012: OECD indicators visit: www.oecd.org/edu/eag2012.