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Question 5#

In a study evaluating medical therapy for lower urinary tract symptoms, men are randomly allocated to 5-alpha-reductase inhibitor (n = 100) or placebo (n = 100) and subsequently monitored for progression to an episode of acute urinary retention (AUR). In the placebo arm 25 men developed AUR compared with 20 in the 5ARI arm. What is the probability of progressing to AUR in those taking the 5ARI?

a. 0.2
b. 5%
c. 1/4
d. 0.5
e. 25%

Correct Answer is A

Comment:

Answer A