Problem 4: Distinguishing between Point and Period
Prevalence, Cumulative Incidence and Incidence Density at Happy
Kids Day Care Center (11 points)
There were 11 children enrolled in the Happy Kids Day Care
Center from the beginning of Month One until the end of Month Four.
The 11 children were watched for a total of 4 months. The staff
tries to keep good records about when children fall ill from
disease X.
Child
Month 1
Month 2
Month 3
Month 4...
Thoroughly answer the following questions:
What is the difference between prevalence and incidence? Provide
an example of each. Do not provide the definitions, explain in your
own words.
What measure of disease frequency is each of the following?
(Incidence density, cumulative incidence, period prevalence, point
prevalence).
a. The percentage of 70-year-old men living in Harris County who
develop pneumonia between January 1, 2011 and December 31,
2011.
b. The percentage of women who delivered babies on December 31,
2010.
c. The percentage of fifth graders who meet the criteria for
obesity during the 2011-2012 school year.
d. The number of live-born babies who die of sudden infant death...
know the mathematical relationship between surface area and
volume, and explain how surface to area volume affects heat loss.
Which can be smaller endotherms or ectotherms
1.Explain the mathematical and graphical relationship between
velocity and acceleration using your own words.
2.Explain the mathematical and graphical relationship
between velocity and position using your own words.
3.How does the angle of inclination affect the velocity
of the marble? The acceleration?
4.Compare calculated velocity and acceleration to
velocity and acceleration determined from graphs. Do the values
match?
If not, which value is more accurate and
why?
5. Describe the motion of an object with positive
velocity and negative acceleration....