Figure 4.

Model fit showing the estimated baseline and attribution to influenza. The actual data, a) the proportion of hours lost, and b) absenteeism rates are plotted against the reference week along with the model predicted values, the model estimated baseline and the attribution to influenza. Influenza is responsible for much of the seasonal variation and contributes significantly to peak absenteeism rates.

Schanzer et al. BMC Infectious Diseases 2011 11:90   doi:10.1186/1471-2334-11-90
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