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This website gathers code and additional material for the paper Causal Exaggeration: Unconfounded but Inflated Causal Estimates.
This paper shows that the use of causal identification strategies induces a trade-off between two biases: avoiding confounding and exaggerating true effect sizes due to a loss in statistical power.
This paper introduces the ididvar package. More information on the package is available on its website.
Resources: Paper , Non-technical summary