1 citations
2 papers
stat.AP2025
A Diagnostic to Find and Help Combat Stochastic Positivity Issues -- with a Focus on Continuous Treatments
Katharina Ring, Michael Schomaker
The positivity assumption is central in the identification of a causal effect, and especially the stochastic variant is an issue many applied researchers face, yet is rarely discus…
stat.ME2024★ 1 cited
Is checking for sequential positivity violations getting you down? Try sPoRT!
Arthur Chatton, Michael Schomaker, Miguel-Angel Luque-Fernandez +2
Background: Sequential positivity is often a necessary assumption for drawing causal inferences, such as through marginal structural modeling. Unfortunately, verification of this a…