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. Author manuscript; available in PMC: 2021 Oct 1.
Published in final edited form as: Biomed Pharmacother. 2020 Jul 30;130:110531. doi: 10.1016/j.biopha.2020.110531

Figure 1. Example of object drug exposure episode eligible for inclusion.

Figure 1.

The presence of precipitant-unexposed person-days before and after precipitant-exposed person-days is indicative of a bi-directional implementation of the self-controlled case series design. P-E = precipitant-exposed; P-U = precipitant-unexposed.