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The many weak instruments problem and Mendelian randomization
Instrumental variable estimates of causal effects can be biased when using many instruments that are only weakly associated with the exposure. We describe several techniques to reduce this bias and estimate corrected standard errors. We present our findings using a simulation study and an empirical...
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| Publicado no: | Stat Med |
|---|---|
| Main Authors: | , , , , , |
| Formato: | Artigo |
| Idioma: | Inglês |
| Publicado em: |
BlackWell Publishing Ltd
2015
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| Assuntos: | |
| Acesso em linha: | https://ncbi.nlm.nih.gov/pmc/articles/PMC4305205/ https://ncbi.nlm.nih.gov/pubmed/25382280 https://ncbi.nlm.nih.govhttp://dx.doi.org/10.1002/sim.6358 |
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