USMLE Step 1 Quiz
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BIOSTATISTICS AND EPIDEMIOLOGY
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A randomized controlled trial is conducted to evaluate the efficacy of a new drug, Drug X, for preventing mortality in patients with heart failure. A Kaplan-Meier survival analysis is performed. The results show that the median survival for the placebo group is 32 months. For the group receiving Drug X, the survival curve crosses the 50% survival probability line at 48 months. The p-value for the log-rank test comparing the two curves is 0.02.
Based on this data, which of the following is the most accurate conclusion?
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