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

Established in 1927 by the American College of Physicians

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

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Table 1. Characteristics of Study Cohort before the First Influenza Season

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Figure. Hospitalizations for pneumonia and influenza. Top. Observed annualized rates of hospitalization for pneumonia and influenza among vaccinated and unvaccinated persons for each study period. Bottom. 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.

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Table 2. Risk for Hospitalizations, Death, and Outpatient Visits among Vaccinated and Unvaccinated Persons during Three Influenza Seasons