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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Vydáno v:BMC Infect Dis
Hlavní autoři: Remschmidt, Cornelius, Wichmann, Ole, Harder, Thomas
Médium: Artigo
Jazyk:Inglês
Vydáno: BioMed Central 2015
Témata:
Research Article
On-line přístup: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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