FOR MORE CLASSES VISIT tutorialoutletdotcom PBH 321 M2A1: Measuring Disease Occurrence - Applying Math Concepts Introduction By the end of this activity, you will be able to recognize the utility of each measure of occurrence applied in epidemiology for presenting specific types of information in a meaningful way, and be able to calculate measures of disease occurrence.

1. PBH 321 M2A1: Measuring Disease
FOR MORE CLASSES VISIT
tutorialoutletdotcom
PBH 321 M2A1: Measuring Disease Occurrence - Applying Math
Concepts Introduction
By the end of this activity, you will be able to recognize the utility of
each measure of occurrence applied in
epidemiology for presenting specific types of information in a
meaningful way, and be able to calculate
measures of disease occurrence.
Instructions
Before answering the below questions, read the required pages in your
text, and review the module notes. For
all questions that require computation, show your calculations, round to
the nearest 10 th degree, and use an
appropriate multiplier, where necessary.
Here is an example showing your calculations, rounding to the nearest
10 th degree, and using a multiplier.
Example question: There were 25 new cases of disease A out of 1,097
people at risk. What is the incidence
rate of disease A per 100,000 people?
Answer:

2. 25/1,097*100,000 = 2,278.9 per 100,000
In this answer, *100,000 is the “multiplier” and the .9 in the number
2,278.9 is the “10 th degree.” Make sure to save your worksheet to your
computer before entering answers. After you have completed your
worksheet, return to the course assignment and follow instructions there
to upload and submit it.
For the first set of questions, you will explore Dengue in Puerto Rico
Dengue is an emerging disease that “is transmitted between people by
the mosquitoes Aedes
aegypt and Aedes albopictus, which are found throughout the world”
(Transmission of the Dengue Virus). The
case fatality rate is 10%, and is currently the leading cause of illness and
death in the tropics and subtropics.
Let’s pretend that the numbers below represent new cases of Dengue in
San Juan, Puerto Rico in 2009.
San Juan, 2009
Jan.
Number of 75
new cases
Population 2,202
at risk Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. 80 81 79
80 84 225 219 220 210 215 68 2,210 2,101 2,118 2,101 2,200 2,180
2,175 2,195 2,145 2,119 2,187 Using the table above, please answer the
following questions. Place your answer in the area below each

3. question (all answer entry boxes expand to accommodate your text).
1) Given that there were 81 new cases in March, what was the incidence
rate per 1,000 people in March?
Click or tap here to enter text. 2) Given that there were 219 new cases in
August, what was the incidence rate per 1,000 people in August?
Click or tap here to enter text. 3) What might you suggest is the reason
for the difference between March and August in terms of the
incidence rate? (1-3 sentences)
Click or tap here to enter text. PBH 321 M2A1: Measuring Disease
Occurrence - Applying Math Concepts In late 2009, a major campaign
was launched in San Juan, Puerto Rico encouraging residents to
minimize
standing water (where mosquitos breed). To see if the initiative had an
impact, it was decided that a
comparison of cases would be made between San Juan (where the
campaign was launched), and Ponce
(where no campaign was launched). Let’s imagine the numbers below
represent the new cases of Dengue in
2010 in San Juan and Ponce, Puerto Rico.
San Juan, 2010
Jan.
Number of 75
new cases
Population 2,204

4. at risk Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. 80 80 79
80 84 120 118 120 111 105 68 2,212 2,113 2,204 2,111 2,159 2,170
2,180 2,200 2,122 2,129 2,200 Feb. Mar. Apr. May Jun. Jul. Aug. Sep.
Oct. Nov. Dec. 5 4 4 5 5 11 10 11 10 11 8 104 103 108 104 105 108 106
105 104 101 104 Ponce, 2010
Jan.
Number of 4
new cases
Population 105
at risk 4) Given that there were 80 new cases in March in San Juan, and
4 in Ponce, what was the incidence rate per
1,000 people in March in San Juan? In Ponce?
Click or tap here to enter text. 5) Given that there were 118 new cases in
August in San Juan, and 10 in Ponce, what was the incidence rate
per 1,000 people in August in San Juan? In Ponce?
Click or tap here to enter text. 6) Given these numbers what
recommendation would you make about continuing the campaign in
future
years, and expanding the campaign to other areas? Would you use the
number of cases, or the incidence
rate to support your recommendation? Explain your answer in 2-5
sentences.
Click or tap here to enter text. For the next question, you will be asked to
explore lung cancer in a highly populated city in the United States

5. In 2010, the prevalence of lung cancer in a suburb outside of Chicago
was 3.0%. In 2011,
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6. In 2010, the prevalence of lung cancer in a suburb outside of Chicago
was 3.0%. In 2011,
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