Fig. 2From: Ambient nitrogen dioxide is associated with emergency hospital visits for atrial fibrillation: a population-based case-crossover study in Reykjavik, IcelandThe odds ratio (OR) and bars showing 95% CI of atrial fibrillation and flutter (ICD-10 code I48) per 10 μg/m3 increase in NO2 concentrations in multiple-pollutant models at lag 0 to lag 4 for unstratified material and different strataBack to article page