Saint Paul

Researchers are conducting a joint effort across 32 medical centers in Europe, the USA, and South Africa to validate two new questionnaires designed to measure how patients perceive the severity and control of Chronic Rhinosinusitis (CRS), with or without nasal polyps. The goal is to assess these questionnaires in routine medical settings and compare their results with existing tools for evaluating CRS. The study will recruit a total of 1000 patients diagnosed with chronic rhinosinusitis according to the EPOS guidelines. Patients will come from regular ENT practices at participating hospitals, ensuring the study's procedures fit within usual care. There are no investigational treatments; the focus is on validating and evaluating the questionnaires. Participants will complete the new questionnaires over approximately six months. Researchers will collect data, conduct statistical analysis, and create study reports through the University of Leuven's statistical department. The main outcomes include validating the questionnaires and evaluating their results compared to other assessment tools during the study period.