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Cumulative incidence of AF and BI, stratified by presence of PACs or AF on study ECG with confidence intervals (shaded areas).
PAC: Premature atrial contractions, AF: Atrial Fibrillation, BI: Brain Ischemia.
Note: The curves are based on instantaneous hazard functions that change over time, and therefore in time-dependent analyses depict the cumulative events for (hypothetical) participants with an ECG abnormality status that is time-constant over the whole follow-up period.
