Unbiased Analysis of Today's Healthcare Issues
A paper by Holmberg et al. (2022) in JAMA provides a number of examples of how collider bias can lead to problematic causal inference. The term collider bias is often invoked when using directed acyclic graphs (DAGs) to map the causal pathway. Collider bias occurs when you aim to measure the impact of A on…
You have data. You see that when people receive an intervention, the outcomes differ. Is this effect causal? For this to be the case you need 4 critical assumptions. Stable Unit Treatment Value Assumption (SUTVA). This assumes that each treated unit does not affect other units. For instance, consider the case where you imposed a…