The following are multiple choice questions (with answers) about medical knowledge.   **Question:** A medical research study is evaluating an investigational novel drug (medication 1) compared with standard therapy (medication 2) in patients presenting to the emergency department with myocardial infarction (MI). The study enrolled a total of 3,000 subjects, 1,500 in each study arm. Follow-up was conducted at 45 days post-MI. The following are the results of the trial: Endpoints Medication 1 Medication 2 P-Value Primary: death from cardiac causes 134 210 0.03 Secondary: hyperkalemia 57 70 0.4 What is the number needed to treat (NNT) for the primary endpoint of death from cardiac causes? (Round to the nearest whole number.)   (A) 5   (B) 16   (C) 20   (D) 50
['(C) 20 <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) 5 \n (B) 16 \n (C) 20 \n (D) 50 <> possible answers', '  A medical research study is evaluating an investigational novel drug (medication 1) compared with standard therapy (medication 2) in patients presenting to the emergency department with myocardial infarction (MI). The study enrolled a total of 3,000 subjects, 1,500 in each study arm. Follow-up was conducted at 45 days post-MI. The following are the results of the trial:\nEndpoints Medication 1 Medication 2 P-Value\nPrimary: death from cardiac causes 134 210 0.03\nSecondary: hyperkalemia 57 70 0.4\nWhat is the number needed to treat (NNT) for the primary endpoint of death from cardiac causes? (Round to the nearest whole number.) <> context@']