Korean version of the Cough Symptom Score: clinical utility and validity for chronic cough.
- Author:
Jae Woo KWON
1
;
Ji Yong MOON
;
Sae Hoon KIM
;
Woo Jung SONG
;
Min Hye KIM
;
Min Gyu KANG
;
Kyung Hwan LIM
;
So Hee LEE
;
Sang Min LEE
;
Jin Young LEE
;
Hyouk Soo KWON
;
Kyung Mook KIM
;
Sang Heon KIM
;
Sang Hoon KIM
;
Jae Won JEONG
;
Cheol Woo KIM
;
Sang Heon CHO
;
Byung Jae LEE
Author Information
- Publication Type:Original Article
- Keywords: Cough; Surveys and questionnaires; Chronic disease; Korean version of the Cough Symptom Score
- MeSH: Chronic Disease; Cough*; Follow-Up Studies; Hospitals, University; Humans; Methods; Surveys and Questionnaires; Visual Analog Scale
- From:The Korean Journal of Internal Medicine 2017;32(5):910-915
- CountryRepublic of Korea
- Language:English
- Abstract: BACKGROUND/AIMS: The Cough Symptom Score (CSS) is a simple, useful tool for measuring cough severity. However, there is no standard Korean version of the CSS. We developed a Korean version of the CSS and evaluated its clinical utility and validity for assessing chronic cough severity. METHODS: The CSS was adapted for Korean use following a forward-backward translation procedure. Patients with chronic cough enrolled from five university hospitals were graded using the CSS and a 100-mm linear visual analog scale (VAS) of cough severity at each visit. Patients completed the Leicester Cough Questionnaire (LCQ) upon presentation and completed the LCQ and Global Rating of Change at follow-up visits after 2 to 4 weeks. The concurrent validity, repeatability, and responsiveness of the Korean version of the CSS were determined. RESULTS: Correlation coefficients between the CSS and LCQ, and between the CSS and VAS, were –0.66 and 0.52, respectively. There was a weak correlation between the scores for night and day symptoms (r = 0.24, p = 0.0006). The repeatability of the CSS in patients with no change in cough (n = 23) was high (intra-class correlation coefficient, 0.75; 95% confidence interval [CI], 0.51 to 0.88). Patients who reported an improvement in cough (n = 30) at follow-up visits had a significant improvement in the CSS (median, −2; 95% CI, −3 to −1; p = 0.0003). CONCLUSIONS: The Korean version of the CSS correlated well with other tools for accessing cough severity in chronic cough patients. Therefore, it could be a reliable method for measuring chronic cough severity.
