The planned sample size was increased
by 10% to allow for patients randomized
but lost to follow-up, giving a total
overall sample size of 2000 patients. The
expected rate of the primary end point
in the placebo group at 28 days was
13.4%, based on the event rate seen in
the EPISTENT trial in patients who underwent
PCI but did not receive ticlopidine
prior to the intervention.6