nr 503 week 4 midterm quiz 2022 questions with verified answers all correct
nr 503 week 4 midterm quiz 2022 questions with verified answers all co
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Endemic means that a disease:
A. Occurs clearly in excess of normal expectancy
B. Is habitually present in human populations
C. Affects a large number of countries simultaneously
D. Exhibits a seasonal pattern
E. Is prevalent among animals
Table who ate egg salad & who did not eat egg salad
Total number of persons who ate each specified combination of food items
Ate tuna Did not eat tuna
Ate egg salad 75 100
Did not eat egg salad 200 50
Total number of persons who ate each specified combination of food items & who later became sick (with acute sore
throats)
Ate tuna Did not eat tuna
Ate egg salad 60 75
Did not eat egg salad 70 15
What is the sore throat attack rate in persons who ate both egg salad & tuna
a. 60/75
b. 70/200
c. 60/133
d. 60/275
e. None of the above
According to the results shown in the preceding tables, which of the following food items (or combination of food
items) is most likely to be infective?
a. Tuna only
b. Egg salad only
c. Neither tuna nor egg salad
d. Both tuna & egg salad
e. Cannot be calculated from the data
In the study of an outbreak of an infectious disease, plotting an epidemic curve is useful because:
a. It helps to determine what type of an outbreak (e.g. single-source, person-to-person) has occurred
b. It shows whether herd immunity has occurred
c. It helps to determine the median incubation period
d. A&c
e. A,b, & c
Which of the following is characteristic of a single-exposure, common-vehicle outbreak?
a. Frequent secondary cases
b. Increasing severity with increasing age
c. Explosive
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, e. All of the above
At an initial examination in Oxford, Mass migraine headaches was found in 5 of 1,000 men aged 30 to 35 years & in 10
of 1,000 women aged 30 to 35 years. The inference that women have a two times greater risk of developing headaches
than do men in this group is:
Incorrect because of failure to distinguish between incidence & prevalence
A prevalence survey conducted from January 1 through December 31, 2012 identified 1,000 cases of schizophrenia in a
city of 2,000,000 persons. The incidence rate of schizophrenia in this population is 5/100,000 persons each year. What
percent of the 1,000 cases were diagnosed in 2012?
10%
Which of the following is an advantage of active surveillance?
More accurate due to reduced reporting burden for health care providers
What would be the effect on age specific incidence rate of uterine cancer if women with hysterectomies were excluded
from the denominator of the calculations, assuming that there are some women in each age group who have had
hysterectomies?
The rates would tend to increase
A survey was conducted among the non-hospitalized adult populations of the united states during 2008 through 20122.
The results from this survey are shown below.
Age group Persons with HTN %
18-29 4
30-39 10
40-49 22
50-59 43
60-69 54
70 & older 64
The researchers stated that there was an age related increase in the risk of hypertension in this population. You
conclude that the researchers interpretation:
Is incorrect because the prevalence is used
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