Table 4 The reduction in COPD mortality (%) if air pollution attained the target levels from 2007 to 2011.
From: The burden of COPD mortality due to ambient air pollution in Guangzhou, China
Target levels (μg/m3)# | Attributable fraction (%, 95% CI)# | ||
|---|---|---|---|
PM10 | SO2 | NO2 | |
No pollution (0,0,0) | 10.91 (1.02–19.58) | 12.71 (5.03–19.85) | 13.38 (2.67–22.84) |
NAAQS (150,80,150) | 0.23 (0.02–0.44) | 0.66 (0.25–1.07) | 0.05 (0.01–0.08) |
50% of NAAQS (75,40,75) | 2.27 (0.20–4.21) | 3.50 (1.34–5.58) | 1.49 (0.28–2.67) |
20% of NAAQS (30,16,30) | 6.72 (0.60–12.28) | 8.13 (3.22–12.74) | 7.15 (1.37–12.50) |
WHO targets (50,20,-) | 4.31 (0.38–7.94) | 7.15 (2.82–11.24) | — |
