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

Table 3.

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

Environmental Pollutants B S.E Exp (β) p-Value
Particulate matter (PM2.5) 0.001 0.000231 1.001 <0.001 *
Carbon monoxide (CO) 0.138 0.0002 1.148 <0.001 *
Nitrogen dioxide (NO2) 0.011 0.000653 1.011 <0.001 *
Ozone (O3) 0.001 0.000269 1.001 <0.001 *

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