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Controlling Time-Dependent Confounding by Health Status and Frailty: Restriction Versus Statistical Adjustment
Nonexperimental studies of preventive interventions are often biased because of the healthy-user effect and, in frail populations, because of confounding by functional status. Bias is evident when estimating influenza vaccine effectiveness, even after adjustment for claims-based indicators of illnes...
Enregistré dans:
| Publié dans: | Am J Epidemiol |
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| Auteurs principaux: | , , |
| Format: | Artigo |
| Langue: | Inglês |
| Publié: |
Oxford University Press
2015
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| Sujets: | |
| Accès en ligne: | https://ncbi.nlm.nih.gov/pmc/articles/PMC4479111/ https://ncbi.nlm.nih.gov/pubmed/25868551 https://ncbi.nlm.nih.govhttp://dx.doi.org/10.1093/aje/kwu485 |
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