Project #73920 - Epi HW



PART 1: MULTIPLE CHOICE - Circle ONE best answer unless otherwise stated  

1.    You conduct a study of 70 students over the 9-month school year.  You identify 14 new cases of influenza per 590 person months of observation at risk.  You therefore estimate:

a.    the incidence rate is 2.3 percent

b.    the incidence rate is 2.3 per person month of observation

c.     the incidence rate is 0.023 per person month of observation

d.     the incidence rate is 0.023 per person year of observation


2.     Which of the following is not usually an aim of epidemiology? (3 points)

a.    To describe the health status of a population

b.    To explain the etiology of disease

c.     To predict the occurrence of disease

d.    To provide treatment to patients for disease

e.    To control the distribution of disease


3.    You receive data from a colleague in which  the race/ethnicity variable only 

contains numbers: 1, 2, 3, 4, 5 and 6.  What do you need to ask the data manager for in order to be able to interpret the responses?

a. value labels

b. variables

c. cases

  d. variable labels


4.     If an ineffective drug was used to treat the common cold, thereby increasing the duration of illness instead of shortening it, which factor would primarily be affected? (3 points)

a.    The prevalence of the disease

b.    The incidence of the disease

c.     Both the incidence and the prevalence of the disease

d.    None of the above

e.    All of the above


5.    If a malaria vaccine were successfully created, preventing malaria infection in individuals, which factor would primarily be affected?

a.    The prevalence of the disease

b.    The duration of the disease

c.   The incidence of the disease

d.   Both the incidence and prevalence of the disease

e.    All of the above


6.    The incidence of hypercholesterolemia (high blood cholesterol levels) among women is decreasing.  What factor(s) would most likely account for this decreased incidence of hypercholesterolemia?

   a.    People with hypercholesterolemia are living longer

b.    Women are following the recommendation to east less fatty food

c.     Treatment for hypercholesterolemia has become less effective

d.    Women are dying more quickly

e.    Both A and B


7.     According to a recent study published in the Journal of the American Medical Association, approximately 2 in 16 American men (aged 14 to 69 years) are currently infected with oral human papillomavirus.  This estimate is an example of:

A.    incidence proportion

B.  incidence rate

C. prevalence 

D. mortality rate


8.     A physician in a Miami clinic published a case series looking at patients he had treated for tapeworm infection.  The physician found that the majority of the patients (85%) were immigrants from Latin America.  What can you conclude from this case series?

a.    Hispanics have a higher risk for tapeworm infection compared to non-Hispanics

b.    The physician has primarily Hispanics patients

c.     Latin American immigrants have a high risk for tapeworm infection

d.    You cannot conclude anything as there is no comparison (control) group of patients who do not have tapeworm infection

e.    All of the above

f.      Both B and C are correct


9.     Which of the following is a strength of cohort study design:

a.    Relative to other study designs, cohort studies can be convenient and quick

b.    Cohort studies can measure incidence of a disease in a study population

c.     Cohort studies are not susceptible to loss to follow-up

d.    Cohort studies are inexpensive

e.    None of the above


10.In 2012, among a population of 10,000 people, 60 people are diagnosed with spinal meningitis and 20 of them die within one year.  Based on this information:

a.    The annual mortality rate for spinal meningitis is 0.006% and the case fatality rate is 0.33% within one year.    

b.    The annual mortality rate for spinal meningitis is 0.33% and the case fatality rate is 0.0006% within one year.

c.     The annual mortality rate for spinal meningitis is 0.2% and the case fatality rate is 33% within one year.

d.    The annual mortality rate for spinal meningitis is 33% and the case fatality rate is 0.2% within one year.

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Due By (Pacific Time) 06/14/2015 05:54 pm
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