Epidemiology Midterm I Exam Test
Questions and 100% Correct Answers Latest
Update
Question 1
What do you call the visual representation of the number of cases tha thave occurred
(on one axis) by the time of occurrences (on the other axis)?
a. A line list
b. epidemiologic curve
c. case definition
d. pie chart
Correct Answer
epidemiologic curve
Question 2
Between January 2005 and May 2007, the CDC had identified 138 cases of
Acanthomelobe Keratitis infections (a rare but potentially blinding infection of the
cornea of the eye) in 35 states and Puerto Rico. Although only 46 interviews of
infected individuals have been acquired, the results indicate a linkage to the use of
Complete MoisturePlus Multipurpose contact lens solution. How might public health
officials have handled this outbreak?
a.
Official letters to all registered healthcare practitioners announcing methods of
treatment and follow-up
b.
Provide the option to health care providers to report the disease
c.
Public health announcement
d. All of the above
Correct Answer
all of the above
Page 1 of 201
,Question 3
Incidence is defined as:
A. The number of new cases in a population. It is calculated by dividing the number of
disease cases by the number of persons at risk for having the disease.
B. The number of disease cases in a population at a given time. It is calculated by
dividing the disease cases at a specified time by the number of persons at risk for
having the disease at that specifiied time.
C. The number of new cases in a population at a given time. It is calculated by
dividing the number of new disease cases at a specified time by the number of
persons at risk for having the disease at that specifiied time.
D.
The number of new cases in a population at a given time. It is calculated by dividing
the number of disease cases at a specified time by the number of persons at risk for
having the diseases at that specifiied time.
E. The number of disease cases in a population at a given time. It is calculated by
dividing the number of new disease cases at a specified time by the number of
persons at risk for having the disease at that specifiied time.
Correct Answer
The number of new cases in a population at a given time. It is calculated by dividing
the number of new disease cases at a specified time by the number of persons at
risk for having the disease at that specifiied time.
Question 4
Most case reports are investigated by public health workers in order to:
a. develop a vaccine
b. treat the affected person appropriately
c. none of these answers
d. understand the underlying risk factors present
Correct Answer
understand the underlying risk factors present
Page 2 of 201
,Question 5
A measure of association or relationship between the incidence in the exposed and
that in the unexposed. Calculated by dividing the new onset cases by those not
exposed to the factor
Correct Answer
Relative Risk
Question 6
Incidence in the exposed and the unexposed is the same.
Correct Answer
Relative Risk is equal to 1 (RR = 1)
Question 7
The "normal" or expected amount of disease occurrence.
Correct Answer
endemic
Question 8
Incidence is defined as:
Correct Answer
The number of new cases in a population at a given time. It is calculated by dividing
the number of new disease cases at a specified time by the number of persons at
risk for having the disease at that specified time.
Question 9
Key elements in descriptive epidemiology for "time"
Correct Answer
calendar days, hours in a day, monthly/yearly cycles of climate
Page 3 of 201
, Question 10
In 1945, 1,000 women worked in a factory painting radium dials on watches. The
incidence of bone cancer in these women up to 1975 was compared with that of
1,000 women who worked as telephone operators in 1945. Twenty of the radium dial
workers and four of the telephone operators developed bone cancer between 1945
and 1975. Develop a 2 x 2 table and determine relative risk of developing bone cancer
for radium dial workers:
Correct Answer
Bone Cancer No Cancer Total
Watches 20 980 1000
Telephone 4 996 1000
Total 24 1976 2000
20//1000 = 5
Question 11
Since October 2016, a total of 1,023 persons infected with Salmonella Saintpaul with
the same genetic fingerprint have been identified in the following states. These were
identified because clinical laboratories in all states send strains from ill persons to
their state public health laboratory for characterization.
The number of ill persons identified in each state is as follows: Arkansas (10 persons),
Arizona (39), California (342), Colorado (8), Connecticut (4), Florida (1), Georgia (18),
Idaho (81), Kansas (14), Kentucky (1), Maine (12), Maryland (25), Massachusetts (18),
Michigan (4), Minnesota (2), Missouri (12), New Hampshire (3), Nevada (4), New Jersey
(4), New Mexico (85), New York (25), North Carolina (5), Ohio (6), Oklahoma (19),
Oregon (7), Pennsylvania (6), Tennessee (6), Texas (226), Utah (2), Virginia (22),
Vermont (1), Washington (4), Wisconsin (6), and the District of Columbia (1).
What percent of cases are from the state with the most cases?
Correct Answer
342/1023 = 33.431 *100 = 33.43%
Page 4 of 201
Questions and 100% Correct Answers Latest
Update
Question 1
What do you call the visual representation of the number of cases tha thave occurred
(on one axis) by the time of occurrences (on the other axis)?
a. A line list
b. epidemiologic curve
c. case definition
d. pie chart
Correct Answer
epidemiologic curve
Question 2
Between January 2005 and May 2007, the CDC had identified 138 cases of
Acanthomelobe Keratitis infections (a rare but potentially blinding infection of the
cornea of the eye) in 35 states and Puerto Rico. Although only 46 interviews of
infected individuals have been acquired, the results indicate a linkage to the use of
Complete MoisturePlus Multipurpose contact lens solution. How might public health
officials have handled this outbreak?
a.
Official letters to all registered healthcare practitioners announcing methods of
treatment and follow-up
b.
Provide the option to health care providers to report the disease
c.
Public health announcement
d. All of the above
Correct Answer
all of the above
Page 1 of 201
,Question 3
Incidence is defined as:
A. The number of new cases in a population. It is calculated by dividing the number of
disease cases by the number of persons at risk for having the disease.
B. The number of disease cases in a population at a given time. It is calculated by
dividing the disease cases at a specified time by the number of persons at risk for
having the disease at that specifiied time.
C. The number of new cases in a population at a given time. It is calculated by
dividing the number of new disease cases at a specified time by the number of
persons at risk for having the disease at that specifiied time.
D.
The number of new cases in a population at a given time. It is calculated by dividing
the number of disease cases at a specified time by the number of persons at risk for
having the diseases at that specifiied time.
E. The number of disease cases in a population at a given time. It is calculated by
dividing the number of new disease cases at a specified time by the number of
persons at risk for having the disease at that specifiied time.
Correct Answer
The number of new cases in a population at a given time. It is calculated by dividing
the number of new disease cases at a specified time by the number of persons at
risk for having the disease at that specifiied time.
Question 4
Most case reports are investigated by public health workers in order to:
a. develop a vaccine
b. treat the affected person appropriately
c. none of these answers
d. understand the underlying risk factors present
Correct Answer
understand the underlying risk factors present
Page 2 of 201
,Question 5
A measure of association or relationship between the incidence in the exposed and
that in the unexposed. Calculated by dividing the new onset cases by those not
exposed to the factor
Correct Answer
Relative Risk
Question 6
Incidence in the exposed and the unexposed is the same.
Correct Answer
Relative Risk is equal to 1 (RR = 1)
Question 7
The "normal" or expected amount of disease occurrence.
Correct Answer
endemic
Question 8
Incidence is defined as:
Correct Answer
The number of new cases in a population at a given time. It is calculated by dividing
the number of new disease cases at a specified time by the number of persons at
risk for having the disease at that specified time.
Question 9
Key elements in descriptive epidemiology for "time"
Correct Answer
calendar days, hours in a day, monthly/yearly cycles of climate
Page 3 of 201
, Question 10
In 1945, 1,000 women worked in a factory painting radium dials on watches. The
incidence of bone cancer in these women up to 1975 was compared with that of
1,000 women who worked as telephone operators in 1945. Twenty of the radium dial
workers and four of the telephone operators developed bone cancer between 1945
and 1975. Develop a 2 x 2 table and determine relative risk of developing bone cancer
for radium dial workers:
Correct Answer
Bone Cancer No Cancer Total
Watches 20 980 1000
Telephone 4 996 1000
Total 24 1976 2000
20//1000 = 5
Question 11
Since October 2016, a total of 1,023 persons infected with Salmonella Saintpaul with
the same genetic fingerprint have been identified in the following states. These were
identified because clinical laboratories in all states send strains from ill persons to
their state public health laboratory for characterization.
The number of ill persons identified in each state is as follows: Arkansas (10 persons),
Arizona (39), California (342), Colorado (8), Connecticut (4), Florida (1), Georgia (18),
Idaho (81), Kansas (14), Kentucky (1), Maine (12), Maryland (25), Massachusetts (18),
Michigan (4), Minnesota (2), Missouri (12), New Hampshire (3), Nevada (4), New Jersey
(4), New Mexico (85), New York (25), North Carolina (5), Ohio (6), Oklahoma (19),
Oregon (7), Pennsylvania (6), Tennessee (6), Texas (226), Utah (2), Virginia (22),
Vermont (1), Washington (4), Wisconsin (6), and the District of Columbia (1).
What percent of cases are from the state with the most cases?
Correct Answer
342/1023 = 33.431 *100 = 33.43%
Page 4 of 201
