NR503: Study Guide Midterm Exam
Questions with Correct Answers
The following table gives the mean annual age-specific mortality rates from measles
during the first 25 years of life in successive 5-year periods. You may assume that the
population is in a steady state (i.e., migrations out are equal to migrations in). Based on
the information above, one may conclude: - Answer-Children ages 5 to 9 had the
highest rate of death in all periods
. In a country with a population of 16 million people, 175,000 deaths occurred during the
year ending December 31, 2005. These included 45,000 deaths from tuberculosis (TB)
in 135,000 persons who were sick with TB. Assume that the population remained
constant throughout the year. Not all 135,000 cases of TB were contracted during 2005.
Which of the following statements is true? - Answer-None of the above
In 2001, a state enacted a law that required the use of safety seats for all children under
7 years of age & m&atory seatbelt use for all persons. The table above lists the number
of deaths due to motor vehicle accidents (MVAs) & the total population by age in 2000
(before the law) & in 2005 (4 years after the law was enacted). - Answer-Correct,
because both the total & the age-adjusted mortality rates are higher in 2005 than in
2000
Which of the following is an advantage of active surveillance? - Answer-More accurate
due to reduced reporting burden for health care providers
A disease has an incidence of 10 per 1,000 persons per year, & 80% of those affected
will die within 1 year. Prior to the year 2000, only 50% of cases of the disease were
detected by physician diagnosis prior to death. In the year 2000, a lab test was
developed that identified 90% of cases an average of 6 months prior to symptom onset;
however, the prognosis did not improve after diagnosis. Which statement is true
concerning the duration of the disease after the development of the lab test? - Answer-
Mean duration of a case of the disease is longer in 2000
What is the overall attack rate in persons who did not eat ice cream? - Answer-33%
The table above describes the number of illnesses & deaths caused by plague in four
communities. The proportionate mortality ratio associated with plague is lowest in which
community? - Answer-Community D
Which of the following is characteristic of a single-exposure, common-vehicle outbreak?
- Answer-The epidemic curve has a normal distribution when plotted against the
logarithm of time
, The following table gives the mean annual age-specific mortality rates from measles
during the first 25 years of life in successive 5-year periods. You may assume that the
population is in a steady state (i.e., migrations out are equal to migrations in). - Answer-
2.4 3.3 2.0 0.6 0.1
A disease has an incidence of 10 per 1,000 persons per year, & 80% of those affected
will die within 1 year. Prior to the year 2000, only 50% of cases of the disease were
detected by physician diagnosis prior to death. In the year 2000, a lab test was
developed that identified 90% of cases an average of 6 months prior to symptom onset;
however, the prognosis did not improve after diagnosis. Comparing the epidemiology of
the disease prior to 2000 with the epidemiology of the disease after the development of
the lab test, which statement is true concerning the disease in 2000? - Answer-
Incidence is higher & prevalence is higher than in 1999
A survey was conducted among 1,000 r&omly sampled adult males in the United States
in 2005. The results from this survey are shown below. The researchers stated that
there was a doubling of risk of hypertension in each age group younger than 60 years of
age. You conclude that the researchers' interpretation: - Answer-is incorrect because
prevalence rates are estimated
Which of the following is a condition which may occur during the incubation period? -
Answer-Transmission of infection
The incidence & prevalence rates of a chronic childhood illness for a specific community
are given below. Based on the data, which of the following interpretations best
describes disease X? - Answer-The duration of disease is becoming longer.
A disease has an incidence of 10 per 1,000 persons per year, & 80% of those affected
will die within 1 year. Prior to the year 2000, only 50% of cases of the disease were
detected by physician diagnosis prior to death. In the year 2000, a lab test was
developed that identified 90% of cases an average of 6 months prior to symptom onset;
however, the prognosis did not improve after diagnosis. Which statement is true
concerning the disease-specific mortality rate after the development of the lab test? -
Answer-:The mortality rate for the disease is the same in 2000
Among those who are 25 years of age, those who have been driving less than 5 years
had 13,700 motor vehicle accidents in 1 year, while those who had been driving for
more than 5 years had 21,680 motor vehicle accidents during the same time period. It
was concluded from these data that 25-year-olds with more driving experience have
increased accidents compared to those who started driving later. This conclusion is: -
Answer-Incorrect because rates are not reported
In a country with a population of 16 million people, 175,000 deaths occurred during the
year ending December 31, 2005. These included 45,000 deaths from tuberculosis (TB)
in 135,000 persons who were sick with TB. Assume that the population remained
Questions with Correct Answers
The following table gives the mean annual age-specific mortality rates from measles
during the first 25 years of life in successive 5-year periods. You may assume that the
population is in a steady state (i.e., migrations out are equal to migrations in). Based on
the information above, one may conclude: - Answer-Children ages 5 to 9 had the
highest rate of death in all periods
. In a country with a population of 16 million people, 175,000 deaths occurred during the
year ending December 31, 2005. These included 45,000 deaths from tuberculosis (TB)
in 135,000 persons who were sick with TB. Assume that the population remained
constant throughout the year. Not all 135,000 cases of TB were contracted during 2005.
Which of the following statements is true? - Answer-None of the above
In 2001, a state enacted a law that required the use of safety seats for all children under
7 years of age & m&atory seatbelt use for all persons. The table above lists the number
of deaths due to motor vehicle accidents (MVAs) & the total population by age in 2000
(before the law) & in 2005 (4 years after the law was enacted). - Answer-Correct,
because both the total & the age-adjusted mortality rates are higher in 2005 than in
2000
Which of the following is an advantage of active surveillance? - Answer-More accurate
due to reduced reporting burden for health care providers
A disease has an incidence of 10 per 1,000 persons per year, & 80% of those affected
will die within 1 year. Prior to the year 2000, only 50% of cases of the disease were
detected by physician diagnosis prior to death. In the year 2000, a lab test was
developed that identified 90% of cases an average of 6 months prior to symptom onset;
however, the prognosis did not improve after diagnosis. Which statement is true
concerning the duration of the disease after the development of the lab test? - Answer-
Mean duration of a case of the disease is longer in 2000
What is the overall attack rate in persons who did not eat ice cream? - Answer-33%
The table above describes the number of illnesses & deaths caused by plague in four
communities. The proportionate mortality ratio associated with plague is lowest in which
community? - Answer-Community D
Which of the following is characteristic of a single-exposure, common-vehicle outbreak?
- Answer-The epidemic curve has a normal distribution when plotted against the
logarithm of time
, The following table gives the mean annual age-specific mortality rates from measles
during the first 25 years of life in successive 5-year periods. You may assume that the
population is in a steady state (i.e., migrations out are equal to migrations in). - Answer-
2.4 3.3 2.0 0.6 0.1
A disease has an incidence of 10 per 1,000 persons per year, & 80% of those affected
will die within 1 year. Prior to the year 2000, only 50% of cases of the disease were
detected by physician diagnosis prior to death. In the year 2000, a lab test was
developed that identified 90% of cases an average of 6 months prior to symptom onset;
however, the prognosis did not improve after diagnosis. Comparing the epidemiology of
the disease prior to 2000 with the epidemiology of the disease after the development of
the lab test, which statement is true concerning the disease in 2000? - Answer-
Incidence is higher & prevalence is higher than in 1999
A survey was conducted among 1,000 r&omly sampled adult males in the United States
in 2005. The results from this survey are shown below. The researchers stated that
there was a doubling of risk of hypertension in each age group younger than 60 years of
age. You conclude that the researchers' interpretation: - Answer-is incorrect because
prevalence rates are estimated
Which of the following is a condition which may occur during the incubation period? -
Answer-Transmission of infection
The incidence & prevalence rates of a chronic childhood illness for a specific community
are given below. Based on the data, which of the following interpretations best
describes disease X? - Answer-The duration of disease is becoming longer.
A disease has an incidence of 10 per 1,000 persons per year, & 80% of those affected
will die within 1 year. Prior to the year 2000, only 50% of cases of the disease were
detected by physician diagnosis prior to death. In the year 2000, a lab test was
developed that identified 90% of cases an average of 6 months prior to symptom onset;
however, the prognosis did not improve after diagnosis. Which statement is true
concerning the disease-specific mortality rate after the development of the lab test? -
Answer-:The mortality rate for the disease is the same in 2000
Among those who are 25 years of age, those who have been driving less than 5 years
had 13,700 motor vehicle accidents in 1 year, while those who had been driving for
more than 5 years had 21,680 motor vehicle accidents during the same time period. It
was concluded from these data that 25-year-olds with more driving experience have
increased accidents compared to those who started driving later. This conclusion is: -
Answer-Incorrect because rates are not reported
In a country with a population of 16 million people, 175,000 deaths occurred during the
year ending December 31, 2005. These included 45,000 deaths from tuberculosis (TB)
in 135,000 persons who were sick with TB. Assume that the population remained
