Table 1.
Parameter estimation of the nexus between novel coronavirus attributable deaths and confirmed cases of COVID-19.
| Variable | Model 1a | Model 2a | Model 3a | Model 4a | Model 5a | Model 6b | Model 7b |
|---|---|---|---|---|---|---|---|
| lnDeathst-1 | 0.8487∗∗∗ [0.0274] | 0.8617∗∗∗ [0.0381] | 0.8617∗∗∗ [0.0230] | 0.8054∗∗∗ [0.2906] | -0.3121∗∗∗ [0.0703] | — | 0.8080∗∗∗ [0.0271] |
| lnConfirmedCases | 0.1091∗∗∗ [0.0273] | 0.0961∗∗∗ [0.0346] | 0.0961∗∗∗ [0.0209] | 1.7075∗∗ [0.6739] | 1.0252∗∗∗ [0.3378] | 0.9149∗∗∗ [0.0384] | 0.1329∗∗∗ [0.0166] |
| constant | -0.4061∗∗∗ [0.1260] | -0.3425∗∗ [0.1616] | -0.3425∗∗ [0.1054] | -6.1673 [4.8809] | — | -2.820∗∗∗ [0.3843] | — |
| Prob > F | 0.0000∗∗∗ | 0.0000∗∗∗ | 0.0000∗∗∗ | 0.0113∗∗ | 0.0000∗∗∗ | 0.0000∗∗∗ | 0.0000∗∗∗ |
| RMSE | — | — | — | 0.1699 | 0.1600 | 0.0546 | 0.0877 |
| R-squared | 0.9877 | 0.9297 | 0.9865 | 0.6800 | 0.8091 | 0.9998 | |
| Obs | 319 | 340 | 340 | 361 | 340 | 29 | 28 |
| No of groups | 21 | 21 | 21 | 21 | 21 | — | — |
| F-test | 0.0032∗∗∗ | — | 0.0007∗∗∗ | — | — | — | — |
| MWALD | — | — | 0.0000∗∗∗ | — | — | — | — |
| CD test | — | — | — | — | 0.7075 | — | — |
Notes: Where [.] is the standard error; a denotes model estimation based on panel data setting; b represents modelling based on time series techniques; ∗∗∗,∗∗ represent statistical significance at 1% and 5% level. lnDeathst-1 is the lagged dependent variable, RMSE is the Root Mean Square Error, R-squared explains the predictive power of the estimated model, Obs represents observations. MWALD is the modified wald statistic and CD test examines the independence of the residuals.