Country-based modelling of COVID-19 case fatality rate: A multiple regression analysis

Table 2 Multiple regression results with forward method for all candidate statistically significant correlated independent variables

Model	Variable	Beta (SD)	Standardized beta	P value	R square (P value)
1	(Constant)	7.80 (1.30)		< 0.001	0.799 (< 0.001)
	Health expenditure per capita	-1.06 (0.17)	-0.894	< 0.001
2	(Constant)	3.42 (1.82)		0.093	0.895 (< 0.001)
	Health expenditure per capita	-0.79 (0.16)	-0.667	< 0.001
	Air pollution	0.93 (0.32)	0.384	0.018
3	(Constant)	4.29 (1.40)		0.016	0.947 (< 0.001)
	health Expenditure per capita	-0.69 (0.12)	-0.580	< 0.001
	Air pollution	0.91 (0.24)	0.377	0.006
	Number of CT scanners (1 million people)	-0.51 (0.18)	-0.246	0.023
4	(Constant)	3.10 (1.14)		0.030	0.974 (< 0.001)
	Health expenditure per capita	-0.58 (0.10)	-0.486	< 0.001
	Air pollution	1.01 (0.19)	0.415	< 0.001
	Number of CT scanners (per 1 million people)	-0.74 (0.16)	-0.357	0.002
	Literacy rate	0.01 (0.00)	0.199	0.031

CT scanner: Computed tomography scanner.