Table 2.

Number of reported cases of flu and of search terms of Wikipedia, results for weeks at Lag -1. Used Pearson correlation coefficient

		Number of cases	Fever	Cough	Flu
Number of cases	r	1.0000
	observations	111
Fever	r	0.4823	1.000
	p-value	<0.001
	observations	111	112
Cough	r	0.1009	0.7501	1.0000
	p-value	0.2920	<0.001
	observations	111	112	112
Flu	r	0.6956	0.6822	0.3345	1.0000
	p-value	<0.001	<0.001	<0.001
	observations	111	112	112	112