NCT07344649Recruiting
Turkish Validation of the Nijmegen Questionnaire in COPD
Source: ClinicalTrials.gov · Last updated 15 Apr 2026
Brief summary (registry, in English)
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.
- Status (registry)
- Recruiting
- Study type
- Observational
- Enrollment
- 90 (estimated)
- First submitted
- 1 Jan 2026
- Start date
- 13 Apr 2026
- Primary completion date
- 1 Jan 2027
- Lead sponsor
- Saglik Bilimleri Universitesi
- Diseases
- COPD
- NCT number
- NCT07344649
What you commit to
- Study type: Observational
- Planned participants: 90
- From 13 Apr 2026 to the primary completion date, 1 Jan 2027
- 1 site in 1 country
- Visits and tests: ask the trial team, the registry does not list them
Built from the registry fields of ClinicalTrials.gov. It describes the study, not your situation.
Who cannot take part
Copied verbatim from ClinicalTrials.gov and grouped by topic. Only the trial team decides who can take part.
Prior treatment
- Acute COPD exacerbation or respiratory infection within the previous 4 weeks
- Coexisting pulmonary conditions such as bronchiectasis, lung cancer, prior pulmonary tuberculosis, pleural disease, or history of lung surgery
Other illness
- Presence of severe cardiac, neurological, or systemic disease affecting questionnaire responses
- Moderate to severe cognitive impairment or communication difficulties
- Severe visual or hearing impairment preventing questionnaire completion
Other
- Pregnancy
- Refusal to participate or withdrawal during the study
Who the study is looking for
- Adults aged 18 years and older
- Diagnosis of COPD confirmed according to GOLD criteria
- Clinically stable disease (no acute exacerbation or hospitalization within the last 4 weeks)
- Ability to read and understand Turkish
- Willingness to participate and provide written informed consent
Age in the registry: 18 years to 75 years · Sex: All · Does not accept healthy volunteers
Sites (1)
Sites in registry order. Pick your city on the disease page to sort them by distance.
| Site | City | Country | Site status |
|---|---|---|---|
| Esra Pehlivan Coordinator of this site? Confirm its status | Istanbul | Turkey (Türkiye) | Recruiting |
This page is information, not medical advice. Discuss any trial with your doctor.