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Conditioning on future exposure to define study cohorts can induce bias: the case of low-dose acetylsalicylic acid and risk of major bleeding
BACKGROUND: A principle of cohort studies is that cohort membership is defined by current rather than future exposure information. Pharmacoepidemiologic studies using existing databases are vulnerable to violation of this principle. We evaluated the impact of using data on future redemption of presc...
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| Publicado no: | Clin Epidemiol |
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| Main Authors: | , , , , , , |
| Formato: | Artigo |
| Idioma: | Inglês |
| Publicado em: |
Dove Medical Press
2017
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| Assuntos: | |
| Acesso em linha: | https://ncbi.nlm.nih.gov/pmc/articles/PMC5703173/ https://ncbi.nlm.nih.gov/pubmed/29200891 https://ncbi.nlm.nih.govhttp://dx.doi.org/10.2147/CLEP.S147175 |
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