Frequency and impact of confounding by indication and healthy vaccinee bias in observational studies assessing influenza vaccine effectiveness: a systematic review

BACKGROUND: Evidence on influenza vaccine effectiveness (VE) is commonly derived from observational studies. However, these studies are prone to confounding by indication and healthy vaccinee bias. We aimed to systematically investigate these two forms of confounding/bias. METHODS: Systematic review...

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Bibliographic Details
Published in:BMC Infect Dis
Main Authors: Remschmidt, Cornelius, Wichmann, Ole, Harder, Thomas
Format: Artigo
Language:Inglês
Published: BioMed Central 2015
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Research Article
Online Access:https://ncbi.nlm.nih.gov/pmc/articles/PMC4609091/
https://ncbi.nlm.nih.gov/pubmed/26474974
https://ncbi.nlm.nih.govhttp://dx.doi.org/10.1186/s12879-015-1154-y
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