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Depiction of the coverage of the IV estimator for scenarios in which the omitted confounder has an additive effect on the hazard. In the each panel, each point represents the empirical coverage based on 1,000 randomly generated datasets each of which has 500 events. The coverage of the MPLE is not represented here which in the vast majority of scenarios had an empirical coverage close to zero, with the exception of the scenario in which there was no confounding
