Fig. 3: Cumulative incidence of CEs over time, according to number of cardiac risk factors.

At 6, 12 and 18 months from randomisation, patients with 0–1 risk factors have an incidence of CE of 1.3%, 2.1% and 2.1%, respectively. Patients with 2–3 risk factors, at the same time-points, have an incidence of CE of 4.5%, 7.2% and 7.7%, respectively. For those with 4 risk factors, the incidences are 9.2%, 14.0% and 14.0%, respectively. Note that any given patient could have accumulated up to 4 risk factors, instead of the 5 identified, since none was exposed both to doxorubicin and epirubicin.