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We sought to evaluate the effect of potent platelet inhibition after acute coronary syndrome on total (ie, first and recurrent) occurrences of any of the primary outcome events (eg, cardiovascular death, myocardial infarction, and stroke) as well as on other ischemic events, such as urgent revascularization, (severe) recurrent ischemia, transient ischemic attacks, and arterial thrombotic events.

In the PLATelet inhibition and patient Outcomes (PLATO) study, 18 624 patients presenting with acute coronary syndromes randomly received ticagrelor (n=9333) or clopidogrel (n=9291). Cox proportional hazard models were used to calculate time to first event and hazard ratios. Total events were compared using a Poisson regression model, and time to second event or death was calculated with the Wei Lin Weissfeld method. Patients randomized to ticagrelor had 1057 total primary end point …