A Study Compared Drug a Versus Standard Therapy in Preventing

A study compared drug A versus standard therapy in preventing recurrent pulmonary embolism (PE) .  The absolute risk reduction for drug A versus standard therapy was 4%.  The incidence of recurrent PE in the standard therapy group was 6%.  There were 24 patients who developed recurrent PE in the drug A group.  How many total subjects were there in the drug A group?

A) 600
B) 900
C) 1200
D) 1500
E) 1800
F) 2100

Correct Answer:

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