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Table 2 Pearson correlations between road traffic noise and air pollution

From: Road traffic noise and children’s inattention

  NO2 pregn NOX pregn PM2.5 pregn NO2 5-y NOX 5-y PM2.5 5-y NO2 age 8 NOX age 8 PM2.5 age 8
Pregnancy noise .43 .45 .44       
5-y average noise .27 .24 .29 .33 .34 .39    
Noise at age 8 .30 .29 .28     .36 .36 .41