Folic acid and birth defects
Автор: Harvard Online
Загружено: 2017-10-03
Просмотров: 69575
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From our free online course, “Causal Diagrams: Draw Your Assumptions Before Your Conclusions”:
https://www.edx.org/course/causal-dia...
Observational studies indicate that folic acid reduces the risk of birth defects. But the estimate changes depending on what the analysis adjusts for. How do we know which variables to include in our analysis to get the correct estimate?
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