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. 2021 Jul 23;18(15):7810. doi: 10.3390/ijerph18157810

Table 4.

Poisson Regression—PM2.5, CO, NO2 and O3 with the number of deaths due to SARS-CoV-2.

Environmental Pollutants B S.E Exp (β) p-Value
Particulate matter (PM2.5) 0.008 0.0002 0.993 0.578
Carbon monoxide (CO) 0.041 0.0015 1.042 <0.001 *
Nitrogen dioxide (NO2) 0.034 0.0004 1.034 <0.001 *
Ozone (O3) 0.015 0.0002 1.015 <0.001 *

* Statistically significant at 5% level of significance: S.E = standard error. β = coefficient estimates; Exp (β) = exponentiated values; Wald = explanatory variables.