Influenza Vaccination and Mortality: Differentiating Vaccine Effects From Bias

@inproceedings{Fireman2009InfluenzaVA,
  title={Influenza Vaccination and Mortality: Differentiating Vaccine Effects From Bias},
  author={Bruce H Fireman and Janelle Lee and Ned Lewis and Oliver Bembom and Marloes P. van der Laan and Roger Baxter},
  booktitle={American journal of epidemiology},
  year={2009}
}
It is widely believed that influenza (flu) vaccination of the elderly reduces all-cause mortality, yet randomized trials for assessing vaccine effectiveness are not feasible and the observational research has been controversial. Efforts to differentiate vaccine effectiveness from selection bias have been problematic. The authors examined mortality before, during, and after 9 flu seasons in relation to time-varying vaccination status in an elderly California population in which 115,823 deaths… CONTINUE READING

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