Fig. 3
From: Association between outdoor air pollution and chronic rhinosinusitis patient reported outcomes
Relationship between CRS symptom severity and outdoor air pollution for the spring–summer population. Change in total CRS symptom scoring for the total spring–summer population (n = 1000 health entries, N = 83 patients) as perceived by the patients after being exposed to an interquartile range (IQR) increase of the pollutant the week before the entry (lag 0 – lag 7). IQR BC = 0.5 µg/m3, IQR NO2 = 9.1 µg/m3, IQR O3 = 26.9 µg/m3, IQR PM2.5 = 7.1 µg/m3. The population was adjusted for outdoor temperature, humidity, sex, age, past smoking status, sinus surgery history, nasal polyp status and comorbidities: COPD, AR and asthma. A Stratification based on sex. B Stratification based on comorbid asthma status. C Stratification based on sinus surgery history. D Stratification based on nasal polyp status