Comparison of five influenza surveillance systems during the 2009 pandemic and their association with media attention

Table 3 Correlation between five influenza surveillance systems and media attention, 31-8-2009 – 3-1-2010*

	Number of newspaper articles		Number of television broadcasts
	Spearman correlation coefficient	P-value	Spearman correlation coefficient	P-value
ILI consultation rates, sentinel GPs/10,000 enrolled patients	0.74	<0.001	0.68	0.002
Number of hospital admissions/10,000 inhabitants	0.74	<0.001	0.80	<0.001
ILI incidence, GIS/10,000 participants	0.49	0.038	0.59	0.010
Estimated ILI incidence, GFT/10,000 inhabitants	0.62	0.006	0.61	0.007
Number of influenza virus detections	0.79	<0.001	0.79	<0.001

ILI influenza-like illness, GIS Great Influenza Survey, GP general practitioner, GFT Google Flu Trends.
*Spearman rank correlation coefficients were determined for the period in which media attention coincided with trends of the ILI/influenza surveillance systems (31-8-2009 through 3-1-2010).

ISSN: 1471-2458