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  1. #1
    Asclepius1's Avatar
    Asclepius1 is offline Ultimate Member 537 points
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    Eight hundred motor vehicle collisions occurred over 2 years

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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

    ----------------------------------------
    I answered "A". But my ** 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.

  2. #2
    Asclepius1's Avatar
    Asclepius1 is offline Ultimate Member 537 points
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    My answer is A. Unable to determine from available information . You gave me the incidence for 2 years and I don't think I can adjust it for 1 year.

  3. #3
    katya is offline Newbie
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    A. Unable to determine from available information

  4. #4
    AliShah is offline Junior Member
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    Me too, A.

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