Consider the following trial. 250 people who met inclusion criteria and provided informed consent were randomized to receive either a new statin medication or a placebo. All received dietary counseling. 126 received the statin, 124 the placebo. The subjects were followed for six months, and all new cardiac events (myocardial infarction, hospitalization for other non-myocardial infarction events, cardiac events, and cardiac deaths). Assume there were no subjects lost to follow-up. In the statin group, there were 8 events reported. In the placebo group, there were 12 events reported.
The absolute risk reduction for this trial is:
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