Actively Recruiting
Turkish Validation of the Nijmegen Questionnaire in COPD
Led by Saglik Bilimleri Universitesi · Updated on 2026-04-15
90
Participants Needed
1
Research Sites
37 weeks
Total Duration
On this page
AI-Summary
What this Trial Is About
Dysfunctional breathing is a common and clinically relevant problem in patients with chronic obstructive pulmonary disease (COPD), contributing to increased dyspnea perception, reduced exercise tolerance, and impaired quality of life. The Nijmegen Questionnaire (NQ) is a widely used symptom-based instrument for screening dysfunctional breathing; however, a validated Turkish version for patients with COPD is currently unavailable. This observational methodological study aims to translate, culturally adapt, and evaluate the validity and reliability of the Turkish version of the Nijmegen Questionnaire (NQ-TR) in individuals with stable COPD.
CONDITIONS
Official Title
Turkish Validation of the Nijmegen Questionnaire in COPD
Who Can Participate
Eligibility Criteria
You may qualify if you...
- Adults aged 18 years and older
- Diagnosis of COPD confirmed according to GOLD criteria
- Clinically stable disease with no acute exacerbation or hospitalization within the last 4 weeks
- Ability to read and understand Turkish
- Willingness to participate and provide written informed consent
You will not qualify if you...
- Acute COPD exacerbation or respiratory infection within the previous 4 weeks
- Presence of severe cardiac, neurological, or systemic disease affecting questionnaire responses
- Coexisting pulmonary conditions such as bronchiectasis, lung cancer, prior pulmonary tuberculosis, pleural disease, or history of lung surgery
- Moderate to severe cognitive impairment or communication difficulties
- Severe visual or hearing impairment preventing questionnaire completion
- Pregnancy
- Refusal to participate or withdrawal during the study
AI-Screening
AI-Powered Screening
Complete this quick 3-step screening to check your eligibility
Trial Site Locations
Total: 1 location
1
Esra Pehlivan
Istanbul, Turkey (Türkiye), 34668
Actively Recruiting
Research Team
E
Esra Pehlivan
CONTACT
C
Cahidenur Koçak
CONTACT
How is the study designed?
Study Type
OBSERVATIONAL
Masking
N/A
Allocation
N/A
Model
N/A
Primary Purpose
N/A
Number of Arms
1
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