Table 2

Per cent change (and 95% CIs) in cardiovascular and respiratory hospital admissions associated with an IQR increase in traffic-related pollutants after acute exposure (lag 1 for cardiovascular and lag 2 for respiratory diagnoses) in London, UK for 2011–2012

CVD admissions % (95% CI)Respiratory admissions % (95% CI)
Indicator/pollutants15–64 years65+ years0–14 years15–64 years65+ years
General traffic
 NOx0.86 (−0.28 to 2.02)−0.32 (−1.19 to 0.56)1.06 (−0.43 to 2.57)−0.81 (−1.92 to 0.31)−1.76 (−2.77 to −0.74)
 NOx—urban0.92 (−0.15 to 2.00)−0.15 (−0.97 to 0.67)1.07 (−0.31 to 2.46)−0.60 (−1.64 to 0.46)−1.51 (−2.45 to −0.55)
Petrol vehicle exhaust
 CO1.59 (0.12 to 3.07)−0.60 (−1.71 to 0.52)1.05 (−0.96 to 3.10)−1.11 (−2.57 to 0.36)−2.10 (−3.43 to −0.75)
 CO—urban0.95 (−0.06 to 1.98)−0.16 (−0.93 to 0.62)0.97 (−0.40 to 2.36)0.21 (−0.80 to 1.24)−0.59 (−1.52 to 0.34)
Diesel vehicle exhaust
 EC1.63 (0.15 to 3.13)0.18 (−0.94 to 1.32)0.72 (−1.22 to 2.70)−0.19 (−1.63 to 1.27)−0.88 (−2.19 to 0.45)
 EC—urban1.28 (0.17 to 2.40)0.14 (−0.72 to 1.00)1.27 (−0.21 to 2.78)−0.03 (−1.12 to 1.08)−0.05 (−1.04 to 0.96)
 BC1.65 (0.11 to 3.21)0.56 (−0.61 to 1.74)0.86 (−1.13 to 2.88)−0.20 (−1.71 to 1.33)−1.09 (−2.47 to 0.31)
 BC—urban0.74 (−0.47 to 1.97)−0.04 (−0.97 to 0.89)1.08 (−0.50 to 2.68)0.44 (−0.78 to 1.66)−0.01 (−1.10 to 1.09)
Vehicle non-exhaust
 Cu1.39 (−0.03 to 2.83)0.06 (−1.02 to 1.16)0.08 (−1.81 to 2.01)−1.18 (−2.60 to 0.26)−1.60 (−2.89 to −0.28)
 Zn0.08 (−1.25 to 1.42)0.16 (−0.85 to 1.18)−0.92 (−2.72 to 1.47)−0.38 (−1.73 to 1.00)−0.73 (−1.96 to 0.52)
 Al0.43 (−1.18 to 2.07)−1.14 (−2.35 to 0.09)0.19 (−2.22 to 2.66)0.82 (−0.84 to 2.50)1.38 (−0.15 to 2.94)
  • EC/BC and metals are adjusted for PM mass.

  • CVD, cardiovascular disease; PM, particulate matter.