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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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| Published in: | BMC Infect Dis |
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| Main Authors: | , , |
| Format: | Artigo |
| Language: | Inglês |
| Published: |
BioMed Central
2015
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| Subjects: | |
| 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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