Relation between Influenza Vaccination and Outpatient Visits, Hospitalization, and Mortality in Elderly Persons with Chronic Lung Disease

Figure. Observed annualized rates of hospitalization for pneumonia and influenza among vaccinated and unvaccinated persons for each study period. Adjusted risk ratios for hospitalization for pneumonia and influenza by study period, comparing unvaccinated with vaccinated persons. The point estimates and 95% CIs are shown.
Figure. Observed annualized rates of hospitalization for pneumonia and influenza among vaccinated and unvaccinated persons for each study period. Adjusted risk ratios for hospitalization for pneumonia and influenza by study period, comparing unvaccinated with vaccinated persons. The point estimates and 95% CIs are shown. Hospitalizations for pneumonia and influenza. Top.Bottom.

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  1. Ann Intern Med March 2, 1999 vol. 130 no. 5 397-403
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