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NR503. Week 4 Midterm Questions and Answers 2024
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NR503. Week 4 Midterm
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NR503. Week 4 MidtermThe population of a city on February 15, 2005, was 36,600. The city has a passive
surveillance system that collects hospital & private physician reports of influenza cases
every month. During the period between January 1 & April 1, 2005, 2,200 new cases of
influenza occurred in the city. Of these cases, 775 persons were ill with influenza
according to surveillance reports on April 1, 2005. The prevalence rate of active
influenza as of April 1, 2005, was: - answer20 per 1,000 population
The population of a city on February 15, 2005, was 36,600. The city has a passive
surveillance system that collects hospital & private physician reports of influenza cases
every month. During the period between January 1 & April 1, 2005, 2,200 new cases of
influenza occurred in the city. Of these cases, 775 persons were ill with influenza
according to surveillance reports on April 1, 2005. The monthly incidence rate of active
cases of influenza for the 3-month period was: - answer20 per 1,000 population
What would be the effect on age-specific incidence rates of uterine cancer if women
with hysterectomies were excluded from the denominator of incidence calculations
assuming that most women who have had hysterectomies are older than 50 years of
age? - answerRates would increase in women older than 50 years of age but may
decrease in younger women as they get older.
The ability of a single person to remain free of clinical illness following exposure to an
infectious agent is known as: - answerImmunity
Which of the following reasons can explain why a person who did not consume the
infective food item got sick? - answerAll of the above
Which of the food items (or combination of items) is most likely to be the infective
item(s)? - answerIce cream only
The case-fatality rate associated with plague is lowest in which community? -
answerCommunity C
The incidence & prevalence rates of a chronic childhood illness for a specific community
are given below. - answerThe duration of disease is becoming longer
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: - answerChildren 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? - answerNone 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). - answerCorrect,
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? - answerMore 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? -
answerMean 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? - answer33%
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? - answerCommunity D
Which of the following is characteristic of a single-exposure, common-vehicle outbreak?
- answerThe 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). -
answer2.4 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;
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