Table 2

 Odd ratios* for emissions-Y outside the effective ranges† of emissions-X

Emission-YEmission-XDXN
BUTCOPM10NOxBZPBZNVOC
*ORs>2.00 shown in bold. ORs⩽1.30 shown in italics. †Effective range taken to be 0.3 km.
BUT1.531.561.36 2.95 2.38 2.04 2.64
CO 2.15 1.901.38 2.91 2.38 2.55 2.61
PM101.711.40 1.26 2.28 1.421.50 2.20
NOx1.59 1.29 1.391.901.371.321.94
BZP 1.40 1.28 0.99 1.08 1.611.351.59
BZN 1.30 1.17 1.20 1.06 1.521.211.55
VOC 1.23 1.11 1.15 0.97 1.45 0.77 1.48
DXN 2.20 1.20 2.24 0.69 3.81 0.68 0.87