Reliability and validity of Leicester Cough Questionnaire Korean version. (August 2014)

• Record Type: Journal Article
• Authors: Han, Jong-Min; Jung, In-Chul; Kang, Weechang; Kim, Seung-Su; Yeo, Yoon; Park, Yang-Chun
• Is Part Of: Chronic respiratory disease. Volume 11:Number 3(2014)
• Page Start: 147
• Page End: 152
• Publication Date: 2014-08
• Subjects: Chronic cough -- quality of life -- Leicester Cough Questionnaire -- reliability -- validity; Respiratory organs -- Diseases -- Periodicals; 616.2005
• DOI: 10.1177/1479972314536206
• Languages: English
• ISSNs: 1479-9723

Abstract

The Leicester Cough Questionnaire (LCQ) is a self-administered questionnaire developed in England and validated for reliability. We developed a Korean translation of this questionnaire by applying a sequential forward and backward translation approach. The purpose of this study is to validate the Korean version of the LCQ (LCQ-K) in Korean patients with chronic cough. A multicenter prospective study was undertaken with 100 chronic cough patients who consented to participate in the study. The LCQ-K includes eight physical items, seven psychological items, and four social items. Visual analog scale (VAS) of cough, Borg Cough Scale (BCS), and Short Form-36 (SF-36) were used as external comparators. Participants included 52 women and 48 men with ages ranging from 18 years to 69 years. The concurrent validity comparing LCQ-K to VAS, BCS, and SF-36 yielded statistically significant Pearson correlation coefficients. The LCQ-K showed good reliability in three domains, with Cronbach's α coefficients ranging from 0.84 to 0.87 (total: 0.91). Test–retest reliability was investigated with single measure intraclass correlation coefficients, which were found to be practically and statistically significant ( p = 0.005). Responsiveness was validated by effective size ranging from 1.16 to 1.40 in each domain. LCQ-K is a reliable, valid, and responsive disease-specific questionnaire for assessing symptoms and quality of life of Korean patients with chronic cough.