PBHL 4613 MIDTERM EXAM UPDATED QUESTIONS AND
CORRECT ANSWERS
Question:
1. Incidence and prevalence data have different appli-cations in public health. Indicate by choosing
the ap-propriate option whether the use is for incidence or prevalence data. Determining workload
and planning the scope of fa-cilities and manpower needs, particularly for chronic disease.
Answer:
This is a use of primarily prevalence data
Question:
2. The incidence of a disease is five times greater in men than in women, but the prevalence shows no
sex dif-ference. The most likely explanation is that:
Answer:
The duration of disease is greater in women
Question:
3. Successful treatment programs that would shorten the duration of a disease primarily affect:
Answer:
The prevalence of the dis-ease
Question:
4. Incidence and prevalence data have different appli-cations in public health. Indicate by choosing
the ap-propriate option whether the use is for incidence or prevalence data. The fundamental tool for
etiologic studies of both acute and chronic diseases.
Answer:
This is a use of primarily incidence data
Question:
5. True or False? A prerequisite for using direct age ad-justment is that the age-specific death rates in
the study population must be stable.
Answer:
True
Question:
6. True or False? At the initial examination in the Framing-ham study, coronary heart disease was
found in 5 per 1000 men ages 30-44, and in 5 per 1000 women ages 30-44. The inference that in this
age group men and women have an equal risk of getting coronary heart disease is incorrect because
the data are prevalence data and not incidence data.
Answer:
True
Question:
7. Incidence and prevalence data have different appli-cations in public health. Indicate by choosing
the ap-propriate option whether the use is for incidence or prevalence data. To express the burden or
extent of some condition or attribute in a population.
, Answer:
This is a use of primarily prevalence data
Question:
8. An epidemiologic survey of roller-skating injuries in Metroville, a city with a population of
100,000 (during the midpoint of the year), produced the following data for a particular year:
Number of skaters in metroville any given month: 12,000 Roller skating injuries in metroville: 600
Total number of residents injured from roller skating: 1,800 Total number of deaths from roller
skating: 90 Total number of deaths from all causes: 900 The proportional mortality ratio (%) due to
roller-skat-ing was:
Answer:
90/900 x 100
Question:
9. The risk of acquiring a given disease during a time period is best determined by:
Answer:
the incidence rate (cumu-lative incidence) for that disease in a given period of time
Question:
10. The major disadvantage of crude rates is that:
Answer:
they do not permit com-parison of population that vary in composition
Question:
11. True or False? E. coli O157:H7 is not considered a threat to the food supply of the United States.
Answer:
false
Question:
12. Which of the following activities characterizes a clin-ical approach (as opposed to an
epidermiologic ap-proach)?
Answer:
B. Description of specific
signs and symptoms in a patient
Question:
13. Which of the following is not usually an aim of epidemi-ology?
Answer:
E. To fund new public
health programs
Question:
14. In the Yearly Mortality Bill for 1632, consumption re-ferred to:
Answer:
C. tuberculosis
Question:
15. John Snow, author of Snow on Cholera:
CORRECT ANSWERS
Question:
1. Incidence and prevalence data have different appli-cations in public health. Indicate by choosing
the ap-propriate option whether the use is for incidence or prevalence data. Determining workload
and planning the scope of fa-cilities and manpower needs, particularly for chronic disease.
Answer:
This is a use of primarily prevalence data
Question:
2. The incidence of a disease is five times greater in men than in women, but the prevalence shows no
sex dif-ference. The most likely explanation is that:
Answer:
The duration of disease is greater in women
Question:
3. Successful treatment programs that would shorten the duration of a disease primarily affect:
Answer:
The prevalence of the dis-ease
Question:
4. Incidence and prevalence data have different appli-cations in public health. Indicate by choosing
the ap-propriate option whether the use is for incidence or prevalence data. The fundamental tool for
etiologic studies of both acute and chronic diseases.
Answer:
This is a use of primarily incidence data
Question:
5. True or False? A prerequisite for using direct age ad-justment is that the age-specific death rates in
the study population must be stable.
Answer:
True
Question:
6. True or False? At the initial examination in the Framing-ham study, coronary heart disease was
found in 5 per 1000 men ages 30-44, and in 5 per 1000 women ages 30-44. The inference that in this
age group men and women have an equal risk of getting coronary heart disease is incorrect because
the data are prevalence data and not incidence data.
Answer:
True
Question:
7. Incidence and prevalence data have different appli-cations in public health. Indicate by choosing
the ap-propriate option whether the use is for incidence or prevalence data. To express the burden or
extent of some condition or attribute in a population.
, Answer:
This is a use of primarily prevalence data
Question:
8. An epidemiologic survey of roller-skating injuries in Metroville, a city with a population of
100,000 (during the midpoint of the year), produced the following data for a particular year:
Number of skaters in metroville any given month: 12,000 Roller skating injuries in metroville: 600
Total number of residents injured from roller skating: 1,800 Total number of deaths from roller
skating: 90 Total number of deaths from all causes: 900 The proportional mortality ratio (%) due to
roller-skat-ing was:
Answer:
90/900 x 100
Question:
9. The risk of acquiring a given disease during a time period is best determined by:
Answer:
the incidence rate (cumu-lative incidence) for that disease in a given period of time
Question:
10. The major disadvantage of crude rates is that:
Answer:
they do not permit com-parison of population that vary in composition
Question:
11. True or False? E. coli O157:H7 is not considered a threat to the food supply of the United States.
Answer:
false
Question:
12. Which of the following activities characterizes a clin-ical approach (as opposed to an
epidermiologic ap-proach)?
Answer:
B. Description of specific
signs and symptoms in a patient
Question:
13. Which of the following is not usually an aim of epidemi-ology?
Answer:
E. To fund new public
health programs
Question:
14. In the Yearly Mortality Bill for 1632, consumption re-ferred to:
Answer:
C. tuberculosis
Question:
15. John Snow, author of Snow on Cholera:
