Allergy Asthma Immunol Res.  2015 May;7(3):230-233. 10.4168/aair.2015.7.3.230.

Reliability and Validity of a Korean Version of the Leicester Cough Questionnaire

• Kwon JW
• Moon JY
• Kim SH
• Song WJ
• Kim MH
• Kang MG
• Lim KH
• Lee SH
• Lee SM
• Lee JY
• Kwon HS
• Kim KM
• Kim SH
• Kim SH
• Jeong JW
• Kim CW
• Cho SH
• Lee BJ
• Work Group for Chronic Cough, the Korean Academy of Asthma, Allergy and Clinical Immunology

• KMID: 2260459
• DOI: http://doi.org/10.4168/aair.2015.7.3.230

Abstract

PURPOSE
There are no specific tools for measurement of the severity of chronic cough in Korea. We developed a Korean version of the Leicester Cough Questionnaire (LCQ) and tested its scaling and clinical properties.
METHODS
The LCQ was adapted for Korean conditions following a forward-backward translation procedure. All patients referred to chronic cough clinics at 5 university hospitals between May 2011 and October 2013 completed 2 questionnaires, the LCQ and the Short-Form 36 (SF-36), upon presentation and completed the LCQ and the Global Rating of Change (GRC) upon follow-up visits after 2 or 4 weeks. Concurrent validation, internal consistency, repeatability, and responsiveness were determined.
RESULTS
For the concurrent validation, the correlation coefficients (n=202 patients) between the LCQ and SF-36 varied between 0.42 and 0.58. The internal consistency of the LCQ (n=207) was high for each of the domains with a Cronbach's alpha coefficient of 0.82-0.94. The repeatability of the LCQ in patients with no change in cough (n=23) was high, with intra-class correlation coefficients of 0.66-0.81. Patients who reported an improvement in cough (n=30) on follow-up visits demonstrated significant improvement in each of the domains of the LCQ.
CONCLUSIONS
The Korean version of the LCQ is a valid and reliable questionnaire for measurement of the severity of cough in patients with chronic cough.

Keyword

Cough; questionnaires; quality of life; chronic disease

MeSH Terms

Chronic Disease
Cough*
Follow-Up Studies
Hospitals, University
Humans
Korea
Quality of Life
Reproducibility of Results*
Surveys and Questionnaires

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