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Development and validation of the COugh Assessment Test (COAT)

Title
Development and validation of the COugh Assessment Test (COAT)
Author
이현
Keywords
cough; questionnaire; reliability; severity; validity
Issue Date
2019-01
Publisher
WILEY
Citation
RESPIROLOGY, v. 24, issue 6, Page. 551-557
Abstract
Background and objective A cough‐specific quality‐of‐life questionnaire is recommended to assess the impact of cough; however, a simple instrument to quantify cough is required for everyday clinical practice. This study was aimed to develop a short patient‐completed questionnaire (COugh Assessment Test, COAT). Methods The COAT was developed and validated by comparison with the Korean version of Leicester Cough Questionnaire (K‐LCQ) and cough numeric rating scale (NRS, 0–10, 11‐point scale) for chronic cough patients. Results Item selection identified five items regarding cough frequency, daily activity, sleep disturbance, fatigue and cough hypersensitivity (0–4 scaling of items, 0–20 score range) through reliability test cohort (n = 78). Test–retest reliability was strong (intra‐class correlation coefficient = 0.88). The final COAT was compared with K‐LCQ and cough NRS in a validation cohort (n = 323). In Rasch analysis, COAT fitted well to a unidimensional model. Pearson correlations of COAT versus K‐LCQ (i) before treatment, (ii) after treatment; COAT versus cough NRS (iii) before treatment, (iv) after treatment; (v) delta‐COAT versus delta‐cough NRS, (vi) delta‐COAT versus delta‐K‐LCQ were (i) −0.71, (ii) −0.81, (iii) 0.69, (iv) 0.82, (v) −0.66 and (vi) 0.72, respectively. Conclusion The COAT is a useful, simple questionnaire for assessing and monitoring cough.
URI
https://onlinelibrary.wiley.com/doi/abs/10.1111/resp.13462http://repository.hanyang.ac.kr/handle/20.500.11754/106133
ISSN
1440-1843; 1323-7799
DOI
10.1111/resp.13462
Appears in Collections:
COLLEGE OF MEDICINE[S](의과대학) > MEDICINE(의학과) > Articles
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