Epi final exam| Ques ons and answers | Updated
RATED A+| New 2026
Sensi vity and specificity of a screening test refer to its:
validity
If A equals the number of deaths in 2015, B equals the popula on at the midpoint of 2015, and
C equals the number of persons ages 15 to 24, what would be the crude mortality rate per
100,000 popula on?
(A/B) x 100,000
T/F? If a disease has a low prevalence in the popula on, it is more likely that a screening test
showing posi ve actually represents a false posi ve.
true
An age-adjusted rate is an accurate rate of disease in a popula on
false
True or False? The causes of morbidity and mortality differ according to the stage of life
true
The number of deaths due to a disease that occur among persons who are afflicted with the
disease is known as the
case-fatality rate
The ability of a measuring instrument to give consistent results in repeated trials is known as
the instrument's:
reliability
Which of the following is an advantage of ac ve surveillance
more accurate due to reduced repor ng burden for health care providers
T/F? All propor ons are ra os, but not all ra os are propor on
true
Calculate the period prevalence from October 1, 2004, to September 30, 2005. The numerator
of period prevalence includes anyone who was ill any me during the period.
, 33.3%
Calculate the incidence rate from October 1, 2004, to September 30, 2005, using the midpoint
popula on (popula on alive on April 1, 2005) as the denominator. Express the rate per 100
popula on.
14 cases per 100 popula on
During the incuba on period, you have been infected with a disease, but you feel fine
yes
Which phrase accurately completes the sentence fragment below?
Mary Mallon, best known by her nickname "Typhoid Mary,"
All the above
T/F? If a person dies from a violent act or accident, it is reported in the non-underlying cause of
death por on of the death cer ficate.
false
The ability of a test to determine true posi ves is its:
sensi vity
True or False? Screening for disease provides only preliminary informa on that needs to be
followed by diagnos c informa on.
true
The number of deaths due to a disease that occur among persons who are afflicted with the
disease is known as the:
case fatality rate
true or false? JoJo has no immunity to measles. (He has neither had the disease, nor has he
been vaccinated). If JoJo visits a communal farm which is experiencing a measles outbreak, he
will be protected by herd immunity.
false
Some diseases are infec ous during the incuba on period, meaning an infected person can
spread disease before they begin to show symptoms.
true
RATED A+| New 2026
Sensi vity and specificity of a screening test refer to its:
validity
If A equals the number of deaths in 2015, B equals the popula on at the midpoint of 2015, and
C equals the number of persons ages 15 to 24, what would be the crude mortality rate per
100,000 popula on?
(A/B) x 100,000
T/F? If a disease has a low prevalence in the popula on, it is more likely that a screening test
showing posi ve actually represents a false posi ve.
true
An age-adjusted rate is an accurate rate of disease in a popula on
false
True or False? The causes of morbidity and mortality differ according to the stage of life
true
The number of deaths due to a disease that occur among persons who are afflicted with the
disease is known as the
case-fatality rate
The ability of a measuring instrument to give consistent results in repeated trials is known as
the instrument's:
reliability
Which of the following is an advantage of ac ve surveillance
more accurate due to reduced repor ng burden for health care providers
T/F? All propor ons are ra os, but not all ra os are propor on
true
Calculate the period prevalence from October 1, 2004, to September 30, 2005. The numerator
of period prevalence includes anyone who was ill any me during the period.
, 33.3%
Calculate the incidence rate from October 1, 2004, to September 30, 2005, using the midpoint
popula on (popula on alive on April 1, 2005) as the denominator. Express the rate per 100
popula on.
14 cases per 100 popula on
During the incuba on period, you have been infected with a disease, but you feel fine
yes
Which phrase accurately completes the sentence fragment below?
Mary Mallon, best known by her nickname "Typhoid Mary,"
All the above
T/F? If a person dies from a violent act or accident, it is reported in the non-underlying cause of
death por on of the death cer ficate.
false
The ability of a test to determine true posi ves is its:
sensi vity
True or False? Screening for disease provides only preliminary informa on that needs to be
followed by diagnos c informa on.
true
The number of deaths due to a disease that occur among persons who are afflicted with the
disease is known as the:
case fatality rate
true or false? JoJo has no immunity to measles. (He has neither had the disease, nor has he
been vaccinated). If JoJo visits a communal farm which is experiencing a measles outbreak, he
will be protected by herd immunity.
false
Some diseases are infec ous during the incuba on period, meaning an infected person can
spread disease before they begin to show symptoms.
true
