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Fig. 2 | Environmental Health

Fig. 2

From: Association between outdoor air pollution and chronic rhinosinusitis patient reported outcomes

Fig. 2

VAS total CRS symptom data and exposure data from both seasonal populations. VAS total CRS symptom data and exposure data presented as boxplots. A Distribution of the VAS total CRS symptoms of the spring–summer (red) population (patients = 116, health records = 1144) and the fall-winter (blue) population (patients = 222, health records = 1432). B Exposure data generated for the spring–summer (red) population (patients = 116, health records = 1144, exposure days = 9152) and for the fall-winter (blue) population (patients = 222, health records = 1432, exposure days = 11,456) for O3, PM2.5, BC and NO2. *** = p-value < 0.001

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