ps2_soln

ps2_soln - BE.104 Spring 05 Problem Set 2 Answers 10pts...

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BE.104 Spring ‘05 Problem Set 2 Answers – 10pts Total Sherley 1. After visiting each household in their defined public health sector (A) during the months of July-August, your team of healthcare monitors documents 40 cases of an unusual skin rash associated with headaches. Sector A is comprised of 500 households located in one section of the city of Boston. What information does your team need so that they can develop estimates of the prevalence and incidence of skin rashes in sector A? Answer: Insight: If you new that each household had only one case, you could develop an analogous prevalence estimate based on households at risk: e.g., “cases/household from July-August” However, in the absence of this knowledge the “average # of cases/household from July-August” could be very misleading. For example, they may all have occurred in a small number of households and someone getting the prevalence data wouldn’t know it. Same analysis for new cases/household and incidence. 2. The team leader for sector B calls you because you are team leader of sector A. The B leader wants to know if your team has observed any case of an unusual skin rash associated with headaches. Leader B reports that they have observed 60 cases in their 1000 households.
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This note was uploaded on 11/11/2011 for the course BIO 20.010j taught by Professor Lindagriffith during the Spring '06 term at MIT.

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ps2_soln - BE.104 Spring 05 Problem Set 2 Answers 10pts...

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