Question special
Chief Resident

In the study for the primary outcome, what in the author's opinion is the explanation for NYHA class II heart failure patient getting more benefit compared to the more severe HF patients NYHA class III/IV. [ NYHA class II: HR 0.63 (95% CI 0.52-0.75) vs NYHA class III or IV: HR 0.90 (95% CI 0.74-1.09)]