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. 2024 Sep 16;26(11):2453–2463. doi: 10.1002/ejhf.3453

Table 3.

Required number of events for the composite of time to cardiovascular death or first heart failure hospitalization

Hazard ratio 0.80 Hazard ratio 0.81 Hazard ratio 0.82
75% Power 558 625 705
80% Power 632 707 797
85% Power 721 809 913
90% Power 844 947 1067

The primary endpoint is incidence rate for total number of heart failure hospitalizations and cardiovascular death, but power is based on time to first cardiovascular death or heart failure hospitalization. The sample size is based on 85% power for a hazard ratio of 0.80, requiring 721 events.

Calculations are from the log‐rank test using nQuery.