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. 2021 Apr 12;28(32):44132–44139. doi: 10.1007/s11356-021-13582-6

Table 6.

Estimation results for Riyadh coronavirus cases

Poisson model Negative Binomial model
Estimate IRR Estimate IRR
Intercept 3.019*** (0.000) 20.47 3.182*** (0.000) 24.09
Xwind_speed_rate -0.101*** (0.000) 0.903 -0.053*** (0.000) 0.947
XDiff_Temp 0.372*** (0.000) 1.45 0.720*** (0.000) 2.054
PM10 0.23*** (0.000) 1.259 0.21*** (0.000) 1.234
NO2 0.05** (0.000) 1.051 0.04*** (0.000) 1.041
O3 0.09*** (0.005) 1.094 0.08*** (0.00) 1.083
Xflights_dom -1.075*** (0.000) 0.341 -1.146*** (0.000) 0.317
Xflights_int 1.152*** (0.000) 3.165 1.086*** (0.000) 2.963
Xcurfew_lock 1.960*** (0.000) 7.105 1.966*** (0.000) 7.145
Overdispersion test 10.609*** (0.000) - - -
Log. Lik -12421.23 - -1353.45 -
Pseudo-R2 0.46 - 0.81 -
AIC 28217 - 3054.2 -
Residual deviance 2655 - 287.50*** (0.000) -

Signif. codes: 0 “***” 0.001 “**” 0.01 “*” 0.05 “.” 0.1 “ ” 1