Analysis of the Transmissibility Change of 2019-Novel Coronavirus Pneumonia and Its Potential Factors in China from 2019 to 2020

Table 1

The summary result of transmissibility change of COVID-19 and its potential factors.

SI mean	SI SD	Averaged (95% CI)	vs. Cum. Baidu Index			vs. Baidu Migration Scale Index
			Changing percentage (95%)	R-squared, value	GCT, value	Changing percentage (95%)	R-squared, value	GCT, value
7.5	3.4	3.44 (2.87, 4)	-0.029%; (-0.007%,-0.051%)	0.2845,		-2.7%; (-4.97%, -0.38%)	0.137,

The significant level is 0.05. is the instantaneous reproduction number, and SI is the serial interval of COVID-19; the changing percentage indicates that the change of when the predictors (e.g., Cum. Baidu Index or Baidu Migration Scale Index) increases one unit. GCT is the Granger causality test. Cum. Baidu Index is the Cumulative Baidu Index.