Table 3

Estimated relative risk (95% CI) of SO2 (50 ppb) and TSP (100 μg/m3) in baseline meta-analysis and after control for the other pollutant

Baseline model Controlling for TSP
SO2 1.12 (1.08 to 1.16)1.02 (0.89 to 1.16)
TSP1.09 (1.06 to 1.13)1.21 (1.10 to 1.32)
Controlling for visibility1.01 (0.95 to 1.08)