- Causal impact studies must be pre-registered in a recognized study registry, documenting their confirmatory research questions and planned analytic activities.
- Researchers should execute research and analysis activities as proposed in their original study registration.
- When deviations from pre-registered plans occur, researchers must update their registry entries and provide an explanation for why a change took place.
There are several options for preregistration including the Registry of Efficacy and Effectiveness Studies (REES), the Open Science Framework (OSF), ClinicalTrials.gov, AEA Registry, EGAP, AsPredicted, and trial registries in the WHO Registry Network.
Last Modified: May 11, 2022