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Time dependent hazard ratio estimation using instrumental variables without conditioning on an omitted covariate
BACKGROUND: Estimation that employs instrumental variables (IV) can reduce or eliminate bias due to confounding. In observational studies, instruments result from natural experiments such as the effect of clinician preference or geographic distance on treatment selection. In randomized studies the r...
| Autores principales: | , , |
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| Formato: | Online Artículo Texto |
| Lenguaje: | English |
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BioMed Central
2021
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| Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7981853/ https://www.ncbi.nlm.nih.gov/pubmed/33743583 http://dx.doi.org/10.1186/s12874-021-01245-6 |