Fig. 2From: Federated causal inference based on real-world observational data sources: application to a SARS-CoV-2 vaccine effectiveness assessmentOverview of the executed steps and produced research objects during the implementation of the proposed methodological approach, step 1 to 4, preparing for the assessment of the real-world effectiveness of a primary vaccination schedule as compared to partial or no vaccination in preventing SARS-CoV-2 infection, in populations spanning national bordersBack to article page