Table 4.

MSE of estimates of $R_0$ for DGP (5.3)–(5.4).

	Deaths	Cases	SUR, Efficient $W$	SUR, Diagonal $W$	SUR, Identity $W$
Panel A: True $E_0=2$ and $I_0=0$, Assumed $E_0=2$ and $I_0=0$
Levels, Cumulative	0.101	0.005	0.006	0.005	0.005
Levels, Daily	0.263	0.014	0.014	0.014	0.014
Logs, Cumulative, Trim	0.180	0.008	0.008	0.008	0.048
Logs, Daily, Trim	0.327	0.015	0.014	0.014	0.079
Logs, Cumulative, No Trim	0.702	0.064	0.043	0.051	0.189
Logs, Daily, No Trim	1.282	0.054	0.036	0.060	0.347
Panel B: True $E_0=2$ and $I_0=0$, Assumed $E_0=1$ and $I_0=0$
Levels, Cumulative	0.100	0.005	0.006	0.005	0.005
Levels, Daily	0.262	0.013	0.013	0.013	0.013
Logs, Cumulative, Trim	0.179	0.008	0.008	0.008	0.048
Logs, Daily, Trim	0.323	0.015	0.014	0.014	0.079
Logs, Cumulative, No Trim	0.701	0.064	0.043	0.051	0.190
Logs, Daily, No Trim	1.281	0.054	0.037	0.062	0.331
Panel C: True $E_0=2$ and $I_0=0$, Assumed $E_0=16$ and $I_0=0$
Levels, Cumulative	0.109	0.005	0.006	0.006	0.005
Levels, Daily	0.253	0.016	0.032	0.067	0.016
Logs, Cumulative, Trim	0.190	0.008	0.009	0.009	0.050
Logs, Daily, Trim	0.528	0.017	0.015	0.015	0.087
Logs, Cumulative, No Trim	0.729	0.065	0.044	0.052	0.192
Logs, Daily, No Trim	1.281	0.057	0.036	0.060	0.346
Panel D: True $E_0=2$ and $I_0=0$, Estimated $E_0$ and $I_0$
Levels, Cumulative	0.101	0.005	0.007	0.008	0.008
Logs, Cumulative, Trim	0.180	0.008	0.009	0.010	0.048
Logs, Cumulative, No Trim	0.709	0.064	0.045	0.053	0.188

The table presents the MSE of the estimates of $R_0$ across 500 simulation draws. The estimates in the first column are based on the deaths data only. The estimates in the second column are based on the reported cases data only. The estimates in the remaining three columns combine the deaths and reported cases data and use different weighting matrices.