Fig 1.
District map of Changsha, Hunan Province in China, with the locations of air quality monitoring stations.
The map was created by the Arcgis10.6 software. This figure previously appeared in https://doi.org/10.1016/j.apr.2021.01.022..
Fig 2.
Concentration-response curves (smoothing by natural cubic spline functions with seven degrees of freedom) between levels of sulfur dioxide (SO2) and carbon monoxide (CO) and relative risk (RR) of death from ischemic heart disease.
Table 1.
Daily deaths, air pollutant levels, and meteorological data in Changsha, between 2016 and 2018.
Table 2.
Relative risk and 95% confidence intervals of daily deaths associated with a 10-unit increase in the levels of sulfur dioxide (SO2) and carbon monoxide (CO) for various lag days in single-pollutant models.
Table 3.
Association of daily death counts attributable to ischemic heart disease and non-accidental causes with 10-unit increases in concentrations of airborne sulfur dioxide (SO2) and carbon monoxide (CO) stratified by age, sex, and season.
Fig 3.
Relative risk (RR) and 95% confidence intervals of daily death counts associated with 10-unit increases in pollutant concentrations for various lags in the two-pollutant model.