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. 2015 May;7(3):230-3.
doi: 10.4168/aair.2015.7.3.230. Epub 2014 Dec 18.

Reliability and validity of a korean version of the leicester cough questionnaire

Jae Woo Kwon  1 , Ji Yong Moon  2 , Sae Hoon Kim  3 , Woo Jung Song  4 , Min Hye Kim  5 , Min Gyu Kang  4 , Kyung Hwan Lim  6 , So Hee Lee  4 , Sang Min Lee  7 , Jin Young Lee  8 , Hyouk Soo Kwon  9 , Kyung Mook Kim  10 , Sang Heon Kim  2 , Sang Hoon Kim  11 , Jae Won Jeong  12 , Cheol Woo Kim  13 , Sang Heon Cho  4 , Byung Jae Lee  14 ; Work Group for Chronic Cough, the Korean Academy of Asthma, Allergy and Clinical Immunology
Affiliations

Reliability and validity of a korean version of the leicester cough questionnaire

Jae Woo Kwon et al. Allergy Asthma Immunol Res. 2015 May.

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.

Keywords: Cough; chronic disease; quality of life; questionnaires.

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Conflict of interest statement

There are no financial or other issues that might lead to conflict of interest.

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