Bunny
Forum Newbie
Topics: 3
Posts: 9
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Eight hundred motor vehicle collisions occurred over 2 years in a city with a population of 600,000; 600 of these accidents were alcohol related. During the same period, there were 400 fatalities due motor vehicle collisions, of which 75% were alcohol-related. Which of the following best represents the 1-year incidence of alcohol-related motor vehicle fatalities in this community?
A. Unable to determine from available information
B. 600 per 600,000
C. 450 per 600,000
D. 300 per 600,000
E. 150 per 600,000
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I answered "A". But my BS performance on NBME is terrible low, sure that was a wrong answer. Actually my question is, can we calculate 1 year statistic value just divide 2-years value?
I mean 400*0.75 = 300 per 2 years => 150 per year.
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