Fig. 4From: Chronic rhinosinusitis associated with chronic bronchitis in a five-year follow-up: the Telemark studyOdds ratio (OR) for developing chronic bronchitis (CB) in relation to CRS-related symptoms (CRS cardinal symptoms without fulfilling the definition for CRS), CRS and CRS+ (more CRS cardinal symptoms than the minimum criteria for CRS) adjusted for age, sex, BMI, smoking and asthmaBack to article page