Estimating Influenza Vaccine Effectiveness in Community-Dwelling Elderly Patients Using the Instrumental Variable Analysis Method
Open Access
- 26 March 2012
- journal article
- research article
- Published by American Medical Association (AMA) in JAMA Internal Medicine
- Vol. 172 (6), 484-491
- https://doi.org/10.1001/archinternmed.2011.2038
Abstract
Influenza causes substantial mortality in people 65 years or older.1-4 Annual vaccination is recommended to reduce the burden of influenza in this age group.5,6 However, the evidence in support of vaccinating older adults against influenza stems primarily from observational studies, which are susceptible to bias.7Keywords
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