Table 3

The increase of 10‐µg·m⁻³ in air pollution level, by means of Poisson regression models for a single-pollutant

Lags	PM₁₀	SO₂	NO₂	O₃
Current-day lag	1.011 (0.980–1.042)	1.018 (0.984–1.054)	1.013 (0.991–1.035)	1.039 (1.010–1.068)
1‐day lag	1.006 (0.976–1.037)	1.005 (0.972–1.039)	1.011 (0.989–1.032)	1.045 (1.018–1.073)
2‐day lag	1.008 (0.978–1.038)	1.002 (0.970–1.036)	1.013 (0.992–1.034)	1.043 (1.016–1.070)
3‐day lag	1.039 (1.010–1.068)	1.029 (0.997–1.062)	1.033 (1.013–1.054)	1.034 (1.009–1.061)
4‐day lag	1.027 (0.999–1.056)	1.025 (0.994–1.058)	1.026 (1.006–1.047)	1.020 (0.994–1.046)

Data are presented as relative risk (95% confidence interval)
PM₁₀: particles with a median aerodynamic diameter of <10 µm
SO₂: sulphur dioxide
NO₂: nitrogen dioxide
O₃: ozone