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Thread: Incidence N*

  1. #1
    Roxanita is offline Senior Member
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    Incidence N*

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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 to 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) 150 per 600,000

    B) 300 per 600,000

    C) 450 per 600,000

    D) 600 per 600,000

    E) Unable to determine from available information

  2. #2
    Asclepius1's Avatar
    Asclepius1 is offline Ultimate Member 537 points
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    My guess is: unable to determine because the question did not give us that specific year to calulate for that year

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    BlakeH is offline Junior Member
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    Agree with Kimjyiu. Answ is E

  4. #4
    Roxanita is offline Senior Member
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    Uhu...

    Let's see...
    From the question...
    800 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 to 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?
    In this city X:
    Population= 600,000
    In a period of 2 years
    800 motor vehicle collisions ocurred

    In the same period of 2y... they tell us that they had:
    400 deaths due to these motor vehicle collisions and
    75% from this number of deaths were OH-related

    With all this information we can only get the 2-year Incidence of alcohol-related motor vehicle fatalities, which will be:

    OH-related motor vehicle fatalities= 400x75%= 300
    Population= 600 000

    Incidence= 300/600 000= 300 per 600 000


    BUT...
    The question is:
    " Which of the following best represents the 1-year incidence of alcohol-related motor vehicle fatalities in this community?

    Tricky question huh

    I agree, the answer for me would also be E)

  5. #5
    quachtinh is offline Junior Member
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    I agree with E

  6. #6
    drgoljan is offline Junior Member 510 points
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    so can't we divide 300 by 2 year period half of it would be 150

  7. #7
    rajaneep is offline Newbie 510 points
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    I think it is e.

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