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).

de Lange et al.

de Lange et al. BMC Public Health 2013 13:881   doi:10.1186/1471-2458-13-881

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