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Confounding by indication in non-experimental evaluation of vaccine effectiveness: the example of prevention of influenza complications
Randomised allocation of vaccine or placebo is the preferred method to assess the effects of the vaccine on clinical outcomes relevant to the individual patient. In the absence of phase 3 trials using clinical end points, notably post-influenza complications, alternative non-experimental designs to...
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| Huvudupphovsmän: | , , , , |
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| Materialtyp: | Artigo |
| Språk: | Inglês |
| Publicerad: |
BMJ Group
2002
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| Ämnen: | |
| Länkar: | https://ncbi.nlm.nih.gov/pmc/articles/PMC1756997/ https://ncbi.nlm.nih.gov/pubmed/12461118 https://ncbi.nlm.nih.govhttp://dx.doi.org/10.1136/jech.56.12.951 |
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