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. 2021 Nov 3;34(1):101687. doi: 10.1016/j.jksus.2021.101687

Table 1.

Poisson Regression for PM 2.5, CO, O3, and NO2 relation with the number of cases and deaths in Delhi.

Cases Estimate(β) Std. Error Z Value Exp(β) Pr(>|Z |)
(Intercept) 6.469e + 00 3.859e-03 1676.25 644.7784026 <2e-16 ***
PM 2.5 −1.282e-03 2.198e-05 −58.34 0.9987188 <2e-16 ***
CO 7.632e-03 6.422e-05 118.85 1.0076614 <2e-16 ***
O3 4.462e-03 4.145e-05 107.64 1.0044719 <2e-16 ***
NO2 4.240e-02 1.163e-04 364.63 1.0433136 <2e-16 ***



Deaths Estimate(β) Std. Error Z Value Exp(β) Pr(>|Z |)

(Intercept) 2.5395135 0.0292915 86.698 12.6735034 <2e-16 ***
PM 2.5 −0.0002536 0.0001665 −1.523 0.9997464 0.128
CO −0.0072579 0.0006331 −11.465 0.9927684 <2e-16 ***
O3 0.0109769 0.0002778 39.508 1.0110374 <2e-16 ***
NO2 0.0284741 0.0009546 29.828 1.0288834 <2e-16 ***

“Std. Error = Standard Error; β = Coefficient Estimates; Exp(β) = Exponentiated Values. ¥Controlled for temporal trends [date, day of week and weekends]. ⁎ Statistically significant at 5% level of significance”.