Fig. 2From: Association of ambient air pollution with cardiovascular disease risks in people with type 2 diabetes: a Bayesian spatial survival analysisCollinearity between ambient air pollutants tested using Pearson correlation matrix. This figure shows that several ambient air pollutants are highly correlated to each other (e.g., there are correlations between PM10 and PM2.5 [i.e., 0.93] and between NOx and NO2 [i.e., 0.94])Back to article page