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    Prevalence rate and incidence rate

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    The exercise problem the following information to figure prevalence and incidence rate:

    Population of the city of Atlantis on March 30th, 2003 = 183,000.
    Number of new cases of tuberculosis occurring between january 1st and June 30th, 1003 = 26
    Number of active TB cases according to the city register on June 30th, 2003 = 264.

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    Solution Preview

    According to the definition, the prevalence rate = number of existing cases / population at risk.
    As of June 30th, 2003, there are 264 TB cases.
    therefore, the prevalence rate for TB is: 264 / 183,000 = 144 / ...

    Solution Summary

    The solution explains how to calculate the prevalence rate and incidence rate.