Turkish Nijmegen Questionnaire Validation for COPD Assessment

This study focuses on patients with clinically stable COPD, a condition that affects breathing. The main goal is to validate the Nijmegen Questionnaire in Turkish, ensuring it's culturally appropriate and effective for Turkish-speaking COPD patients. This is important because it will help healthcare providers better understand and assess the symptoms of COPD in this population, potentially improving care and treatment. The study follows international guidelines for patient-reported outcome measures to ensure accuracy and reliability. The study involves two main phases. First, the Nijmegen Questionnaire is translated and adapted to Turkish, a process that includes forward and back-translation, review, and cognitive debriefing with patients. Once the Turkish version (NQ-TR) is ready, it's given to eligible participants twice, with a one-week gap, to assess its consistency. The study also evaluates how well the NQ-TR aligns with other established clinical measures for COPD, such as the COPD Assessment Test (CAT), Modified Medical Research Council (mMRC) Dyspnea Scale, Hospital Anxiety and Depression Scale (HADS), and Dyspnea-12 (D-12). This helps to ensure the questionnaire's validity and reliability.