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Chronic Cough Patient Perspective: questionnaire validation and symptom impact
Fulvio Braido1,2,3, Maria Giulia Candeliere2,3, Benedetta Bondi2
1IRCCS Ospedale Policlinico San Martino, Genoa, Italy.
ERJ Open Research
|January 15, 2025
Summary
The Chronic Cough Patient Perspective (CCPP) tool effectively assesses chronic cough (CC) impact on quality of life. Validated for clinical use, it offers reliable measurement for improved patient care.
Area of Science:
- Pulmonology
- Clinical Psychology
Background:
- Chronic cough (CC) is often overlooked, impacting patient quality of life.
- Current assessment tools may lack the psychometric rigor for individual patient use.
Purpose of the Study:
- To validate the Chronic Cough Patient Perspective (CCPP) tool for daily clinical practice.
- To establish the psychometric properties of the CCPP for assessing CC.
Main Methods:
- A provisional 8-item CCPP was developed from the Chronic Cough Impact Questionnaire (CCIQ).
- Psychometric properties were evaluated in 150 CC patients across two visits.
- Exploratory factor analysis and correlation analyses were used to validate the CCPP.
Main Results:
- A 7-item CCPP demonstrated strong correlation with CCIQ (r=0.902-0.932) and high internal consistency (Cronbach's alpha=0.85-0.93).
- The tool showed satisfactory convergent and discriminant validity, and high reliability (CCC=0.815, ICC=0.823).
- A CCPP score ≤5 indicates optimal health-related quality of life (HRQoL); only 37.33% achieved this post-intervention.
Conclusions:
- The CCPP is a valid, reliable, and standardized instrument for assessing the impact of CC on HRQoL.
- The CCPP possesses suitable psychometric properties for routine clinical application.
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