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Figure 9 | BMC Public Health

Figure 9

From: Characterizing Influenza surveillance systems performance: application of a Bayesian hierarchical statistical model to Hong Kong surveillance data

Figure 9

Comparison of posterior distributions for non-flu index, illness index and public awareness index as measure of correspondence between surveillance and the information environment proxy data for hospitalization data series during the non-pandemic period. A) flu-HA; B) P&I-HA; C) P&I-HA(0-15 yr); D) P&I-HA(65+ yr).ρ2 is the coefficient for non-flu index, ρ3 is the coefficient for illness index, and ρ4 is the coefficient for public awareness index.

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