Fig. 3From: Evaluation of associations between asthma exacerbations and distance to roadways using geocoded electronic health records dataAssessment of non-linear associations between asthma exacerbation and distance to roadways among different distance groupings for different outcome tiers. The reference group here is < 0.25 mile, and there is no evidence showing children living closest to roadways had increased risk of asthma exacerbationBack to article page