Table 1.

The time lag cross-correlation between the BDI, SMI and COVID-19-related data from 20 January to 20 March in 2020.

		New confirmed cases	New death cases	New cured discharge cases	Cumulative confirmed cases	Cumulative death cases	Cumulative cured discharge cases
BDI	Day	Lag-6	Lag-15	Lag16	Lag5	Lag5	Lag3
	Spearman correlation coefficient	0.900	0.879	−0.973	−0.986	−0.986	−0.986
	P-value	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001
SMI	Day	Lag-19	Lag-19	Lag-2	Lag-11	Lag-11	Lag-11
	Spearman correlation coefficient	0.753	0.739	−0.722	−0.707	−0.707	−0.707
	P-value	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001