Influenza vaccination: policy versus evidenceBMJ 2006; 333 doi: https://doi.org/10.1136/bmj.39024.451389.FA (Published 09 November 2006) Cite this as: BMJ 2006;333:1020
No gap between policy and evidence
- David S Fedson, retired physician1,
- Kristin L Nichol, professor of medicine2
- 101630 Sergy Haut, France email@example.com
- 2University of Minnesota
Jefferson believes that his systematic reviews show that influenza vaccines “have little or no effect on the effects measured.”1 He wonders why there is a gap between evidence and policy.
Jefferson identifies three reasons why his evidence contradicts policy.
Firstly, policy relies heavily on non-randomised studies. Yet his preference for randomised controlled trials is based on historical, pragmatic, and heuristic reasons and cannot be justified on epistemological …