EPID 309 EXAM 3 UPDATED ACTUAL QUESTIONS AND
CORRECT ANSWERS
Question:
1. A new screening tool is better able to identify people without the disease. This test likely has higher
________ than the previously used tool.
Answer:
specificity
Question:
2. Which of the following is NOT conducive to success of a medical screening program?
Answer:
NOT: screening inexpensive
NOT: long duration of inapparent disease
NOT: High incidence
Question:
3. A group of persons working on behalf of or strongly supporting a particular cause, such as an item of
legislation, an industry, or a special segment of society is known as:
Answer:
an interest group
Question:
4. The ability to identify a case as a case is known as
Answer:
sensitivity
Question:
5. A new screening test is developed which has a greater sensitivity than the previous 'gold standard' test
for breast cancer among women. If nothing else changes,
Answer:
the negative predictive value will also go up, because more of the individuals without abnormal cells will
receive a negative test results even though the number of false negatives doesn't change.
Question:
6. A rapid screening test for syphilis antibodies was performed on a 19 year old, sexually active patient
who presented with acute abdominal pain. The antibody test was reactive, suggesting the presence of
syphilis. Further testing, however, using a more [invasive but] definitive procedure was negative for
syphilis.
The clinic performed an evaluation of the validity of the rapid screening test by comparing it with the
definitive [aka gold standard]: 50 of the rapid screening tests were reactive and 450 were not reactive. Of
the 50 reactive tests, 30 were subsequently determined by the definitive procedure to be positive. However,
50 of the 450 negative screening results were determined to be positive by the definitive procedure .
Answer:
95.2%
, Question:
7. Screening for disease involves which type of prevention?
Answer:
secondary
Question:
8. The ability of a measuring instrument to give consistent results in repeated trials is known as:
Answer:
reliability
Question:
9. Selective screening involves the screening test to which of the following?
Answer:
high risk groups
Question:
10. Which of the following is (are) an example of "simple" health policy questions that pertain to the use of
screening tests?
Answer:
all of the answers listed
Question:
11. A test which determines whether disease is present is:
Answer:
diagnostic test
Question:
12. In the surveillance of outbreaks, often those seeking health care and being passively reported to the
system are only a subset of the sick population. This means the data are likely subject to
Answer:
reporting bias
Question:
13. Determination of the incubation period for a disease outbreak helps to:
Answer:
identify possible infectious agents
Question:
14. The time period between initial exposure and a measurable response is known as
Answer:
latency
Question:
15. The severity of a disease produced by an infectious agent is referred to as:
Answer:
virulence
CORRECT ANSWERS
Question:
1. A new screening tool is better able to identify people without the disease. This test likely has higher
________ than the previously used tool.
Answer:
specificity
Question:
2. Which of the following is NOT conducive to success of a medical screening program?
Answer:
NOT: screening inexpensive
NOT: long duration of inapparent disease
NOT: High incidence
Question:
3. A group of persons working on behalf of or strongly supporting a particular cause, such as an item of
legislation, an industry, or a special segment of society is known as:
Answer:
an interest group
Question:
4. The ability to identify a case as a case is known as
Answer:
sensitivity
Question:
5. A new screening test is developed which has a greater sensitivity than the previous 'gold standard' test
for breast cancer among women. If nothing else changes,
Answer:
the negative predictive value will also go up, because more of the individuals without abnormal cells will
receive a negative test results even though the number of false negatives doesn't change.
Question:
6. A rapid screening test for syphilis antibodies was performed on a 19 year old, sexually active patient
who presented with acute abdominal pain. The antibody test was reactive, suggesting the presence of
syphilis. Further testing, however, using a more [invasive but] definitive procedure was negative for
syphilis.
The clinic performed an evaluation of the validity of the rapid screening test by comparing it with the
definitive [aka gold standard]: 50 of the rapid screening tests were reactive and 450 were not reactive. Of
the 50 reactive tests, 30 were subsequently determined by the definitive procedure to be positive. However,
50 of the 450 negative screening results were determined to be positive by the definitive procedure .
Answer:
95.2%
, Question:
7. Screening for disease involves which type of prevention?
Answer:
secondary
Question:
8. The ability of a measuring instrument to give consistent results in repeated trials is known as:
Answer:
reliability
Question:
9. Selective screening involves the screening test to which of the following?
Answer:
high risk groups
Question:
10. Which of the following is (are) an example of "simple" health policy questions that pertain to the use of
screening tests?
Answer:
all of the answers listed
Question:
11. A test which determines whether disease is present is:
Answer:
diagnostic test
Question:
12. In the surveillance of outbreaks, often those seeking health care and being passively reported to the
system are only a subset of the sick population. This means the data are likely subject to
Answer:
reporting bias
Question:
13. Determination of the incubation period for a disease outbreak helps to:
Answer:
identify possible infectious agents
Question:
14. The time period between initial exposure and a measurable response is known as
Answer:
latency
Question:
15. The severity of a disease produced by an infectious agent is referred to as:
Answer:
virulence
