Figure 2. Predictors of domestic airborne BC.
There was a significant correlation between BC and a) neighborhood asthma prevalence (R=0.33, P<0.001), B) density of buildings burning residual oil (R=0.37, P<0.001) and C) density of truck routes (R=0.31, P<0.001). Lines represent linear regression with 95% CI in gray. Points are color coded by homes in low (blue) and high (red) asthma prevalence neighborhoods