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KMID : 1225720150070030230
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Allergy, Asthma & Immunology Research : AAIR
2015 Volume.7 No. 3 p.230 ~ p.233
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Reliability and Validity of a Korean Version of the Leicester Cough Questionnaire
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Kwon Jae-Woo
Moon Ji-Yong
Kim Sae-Hoon
Song Woo-Jung
Kim Min-Hye
Kang Min-Gyu
Lim Kyung-Hwan
Lee So-Hee
Lee Sang-Min
Lee Jin-Young
Kwon Hyouk-Soo
Kim Kyung-Mook
Kim Sang-Heon
Kim Sang-Hoon
Jeong Jae-Won
Kim Cheol-Woo
Cho Sang-Heon
Lee Byung-Jae
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Abstract
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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.
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KEYWORD
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Cough, questionnaires, quality of life, chronic disease
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