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. 2020 Jun 9;138:109911. doi: 10.1016/j.chaos.2020.109911

Table 4.

Results of the most preferred model with the estimators: COVID-19 Discharged Cases.

Estimator		Estimation Methods
Estimator		OLS	CORC	HILU	PW	LAD
${\hat{β}}_{0}$	Estimate	8.8236	87.4791	91.4391	7.13149	0.4897
	Std. Error	9.3703	69.7831	72.8257	13.8694	5.2657
	T-value	0.9417	1.254	1.256	0.5142	0.093
	P-value	0.3523	0.2179	0.2171	0.6101	0.9264
${\hat{β}}_{1}$	Estimate	-3.0062	-19.9917	-20.6673	-3.6692	0.6712
	Std. Error	2.8784	14.5542	15.0457	4.403	2.1814
	T-value	-1.044	-1.374	-1.374	-0.8333	0.3077
	P-value	0.3029	0.1778	0.1778	0.4099	0.76
${\hat{β}}_{2}$	Estimate	0.1972	1.4509	1.4928	0.344	-0.1777
	Std. Error	0.2618	1.0268	1.0551	0.4165	0.2679
	T-value	0.7532	1.413	1.415	0.8259	-0.6633
	P-value	0.456	0.166	0.1655	0.414	0.5111
${\hat{β}}_{3}$	Estimate	0.0037	-0.0339	-0.035	-0.0036	0.0169
	Std. Error	0.0089	0.0294	0.0301	0.0143	0.0117
	T-value	0.4131	-1.154	-1.164	-0.2496	1.443
	P-value	0.6819	0.2558	0.2517	0.8042	0.1572
${\hat{β}}_{4}$	Estimate	-6.89e-05	0.0003	0.0003	3.28e-05	-0.0002
	Std. Error	0.0001	0.0003	0.0003	0.0002	0.0002
	T-value	-0.687	1.101	1.114	0.2032	-1.39
	P-value	0.4963	0.2779	0.2726	0.8401	0.1726
$\hat{ρ}$			0.7133	0.719	0.6968
Adj. R2		0.992512	0.993402	0.993402	0.993328	0.9932
DW	Stat-value	0.6965	2.0548	2.0669	1.9497	2.06048
DW	P-value	4.7e-009***
SW	Stat-value	0.9724	0.8717	0.8676	0.8622	0.8434
SW	P-value	0.3819	0.0002***	0.0002***	0.0001***	3.6e-005***

Note: (i) *** implies significance at alpha = 0.01.