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NSG 522 Biostat Final > Exam questions > Flashcards

Exam questions Flashcards

1
Q

Although epidemiologist provider the scientific evidence
relating to health-related states, events, and services they should
never influence the policy making process.
-True
-False

A

False

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2
Q

Which of the following variables are health determinates?
(Select all that apply)
- Education
- Genetics
- Environment
- Nutrition
- Neighborhood

A
  • Education*
  • Genetics *
  • nutrition
  • Environment*
  • Neighborhood*
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3
Q

A risk factor is a cause of disease or part of the casual chain
that leads to disease.
- True
- False

A

true

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4
Q

Arrange the following items in the order of the chain of infection
- Reservoir
- Portal of exit
- Mode of transmission
- Portal of entry
- Host

A
  • Reservoir *1
  • Portal of exit* 2
  • Mode of transmission*3
  • Portal of entry*4
  • Host*5
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5
Q

When a person has a risk factor for a disease, that means that
the person will eventually develop the disease.
- True
- False

A

false

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6
Q

Reservoirs of infectious disease include
- Animals
- Insects
- Humans
- All of the above

A

All of the above

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7
Q

Acquiring a surgical site infection related to the use of
contaminated surgical equipment would be an example of a
direct mode of disease transmission.
-True
-False

A

-False

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8
Q

A patient acquired syphilis after having sexual intercourse
with a new sexual partner. This is an example of .
- Direct transmission
- Transmission by a vehicle
- Indirect transmission
- Transmission by a vector

A

Direct transmission

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9
Q

Developing an infectious disease after a tick bite would be an
example of indirect disease transmission.
- True
- False

A

True

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10
Q

Vectors include
- Food
- Mosquitoes
- Eating utensils
- All of the above

A

Mosquitoes

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11
Q

Active immunity can be achieved through SELECT ALL
THAT APPLY
- Vaccination
- Cocooning
- Administering immunoglobulins
- Breastfeeding

A
  • Vaccination
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12
Q

To achieve heard immunity, approximately what percentage
of the population needs to be immunized?
- 50%
- 75%
- 85%
- 95%

A

85%

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13
Q

Administering immunoglobulin to someone exposed to
rabies would be an example of active immunity.
- True
- False

A

false

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14
Q

Protecting a newborn infant from influenza
include (SELECT ALL THAT APPLY)
- Cocooning
- Vaccinating the mother during pregnancy
- Herd immunity
- Having the mother breastfeed the infant

A
  • Cocooning *
  • Vaccinating the mother during pregnancy*
  • herd immunity
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15
Q

The epidemiological triad includes
- Vehicles, vectors, and fomites
- Agent, host, and environment
- Surveillance, field investigations, and analytical studies
- Rates, ratios, and proportions

A
  • Agent, host, and environment *
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16
Q

The Bradford Hill criteria are used to
- Determine causation
- Evaluate the sensitivity and specificity of a screening test
- Determine statistical significance
- Evaluate the effectiveness of an intervention

A

Determine causation

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17
Q

Most infectious disease are the result of a single causative
agent.
- True
- False

A

false

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18
Q

Most diseases are diagnosed during which of the following
stages?
- Stage of susceptibility
- Stage of subclinical disease
- Stage of clinical disease
- Stage of recovery, disability, or death

A
  • Stage of clinical disease
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19
Q

Providing physical therapy for a person who has experience
a spinal cord injury would be an example of
- Primary prevention
- Secondary prevention
- Tertiary prevention
- Primordial prevention

A
  • Tertiary prevention *
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20
Q

Vaccinating employees for influenza is an example of
- Primary prevention
-Secondary prevention
- Tertiary prevention
- All three levels of prevention

A
  • Primary prevention*
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21
Q

Using mammography to identify women who have breast
cancer is an example of
-Primary prevention
- Secondary prevention
- Tertiary prevention
- Both primary and secondary prevention

A
  • Secondary prevention*
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22
Q

A rate is a count of the number people in the population with
a health -related condition of interest
- True
-False

A

False

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23
Q

Adjusted rates are used to control the effects of age on a
health outcome when comparing the rate for different
populations.
- True
- False

A

true

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24
Q

A population pyramid is used to describe the age and gender
distribution of a population.
- True
- False

A

true

25
Q

In the United States, surveillance data is collected by the
Center for Disease Control and Prevention.
- True
- False

A

true

26
Q

Hospitals and primary care providers in the community are
required by law to report cases or notifiable diseases to local or
state health departments.
- True
-False

A

true

27
Q

Surveillance is performed by public health officials.
Practicing clinicians such as nurse and physicians do not play a
role in surveillance activities
- True
- False

A

false

28
Q

Public health surveillance includes which of the following
activates?
- Data collection and analysis
- The development and implementation of health promotion
programs
- The implementation and evaluation of disease control
programs
- All of the above

A

all of the above

29
Q

Public health surveillance is best described as
- A method of monitoring persons exposed to a disease
- An extensive data collection system
- A continuing watchfulness of public health problems
- A system for quickly intervening during an outbreak of
Disease.

A

A continuing watchfulness of public health problems

30
Q

Which of the following terms describes the number of new
cases of a disease during a specified time interval in a specified
population?
- incidence
- Prevalence
- Period prevalence
- Point incidence

A

incidence

30
Q

Morbidity is used to document
- The number of cases of disease
- The number of deaths due to the disease being studied
- The number of births in relationship to the number of deaths
- The number of cases of infectious diseases

A

The number of cases of disease

31
Q

Which of the following terms describes the number of all
cases of a disease during a 6-month period?
- Incidence rate
- Incidence proportion
- Period prevalence
- Point prevalence

A

Period prevalence

32
Q

The maternal mortality rate measures the number of maternal
deaths
- Anytime during pregnancy, regardless of the cause of death
- Anytime during pregnancy and the first 6 weeks after birth
- Only during pregnancies resulting in a live birth
-Anytime during pregnancy and due to pregnancy related
Problems.

A
  • Anytime during pregnancy and the first 6 weeks after birth*
33
Q

The neonatal mortality rate refers to
- The number of deaths during the first year of life
- The number of fetal and neonatal deaths during the 4-week
period before and after birth
- The number of deaths within the first 27 days of life
- The number of deaths in the first 7 days of life.

A

The number of deaths within the first 27 days of life *

34
Q

Which vital statics is most commonly used to compare the health status of nations
- infant mortality rate
-Cruse mortality rate
- Birth rate
- Neonatal mortality rate

A

infant mortality rate

35
Q

A risk ratio of 1.0 indicates
- An equivalent risk of disease in the groups being compared
- A 1% risk of getting the disease
- A reduced risk of getting the disease
- An increased risk of getting the disease

A

An equivalent risk of disease in the groups being compared*

36
Q

. A risk ratio of 2.0 indicates that
- The exposed group was twice as likely to have the disease than
the unexposed group
- The exposed group was protected from the disease
- The exposed group was half as likely to develop the disease
than the unexposed group
-The unexposed group had a greater risk of developing the
Disease.

A

The exposed group was twice as likely to have the disease than
the unexposed group *

37
Q

Attributable risk is an estimate of
- The overall risk of acquiring a disease
-The risk of getting a disease associated with a specific exposure
- The risk of getting a disease during a specified time
- The incidence proportion

A

The risk of getting a disease associated with a specific exposure*

38
Q

A team of researchers begins studying infants at the time of
birth and continues to follow the infants throughout childhood
and into early adulthood. This type of study would be classified
as a
-Prospective cohort study
- Cross- sectional study
- Case -control study
- Randomized controlled trial.

A

Prospective cohort study

39
Q

A group of clinical nurse leaders has undertaken the
responsibility of identifying an effective fall reduction program
for their clinical unit. Which of the following types of studies
would provide the highest level of evidence for this project?
- Randomized clinical trial
- Prospective cohort study
- Meta-analysis
- Ecological study

A

Meta-analysis

40
Q

Which of the following types of studies provides the lowest level of evidence on the evidence pyramid?

  • Retrospective cohort study
  • Quasi- experiment
  • Cross- sectional study
  • Case – control study
A

Cross- sectional study *

41
Q

A clinical nurse leader is evaluating the impact of a new intervention focused on reducing the risk of central line blood
stream infections. The relative risk in patients receiving the
intervention was 0.86 (95% CI: 0.76,0.96) This statistic means that
- The new intervention reduces the risk of infection
- The new intervention increases the risk of infection
- The new intervention has no impact on the risk of infection
- The impact of the new intervention cannot be determined.

A

The new intervention reduces the risk of infection *

42
Q

The Framingham Heart Study is an example of
- Prospective cohort study
- Longitudinal cross -sectional survey
- Randomized clinical trial
- Ecological study
- Case control study

A

Prospective cohort study

43
Q

Which of the following risk of statistics should be reported for a randomized clinical trial
- Odds ratio
-Relative risk
-Attributable risk
-Proportionate risk

A

-Relative risk

44
Q

a Nurse researcher is planning to test whether preoperative bathing with disinfectant soap decreases surgical site infections.
Which research design would provide the best evidence to
determine whether the intervention worked?
- Ecological study
- Prospective cohort study
- Case control study
- Randomized clinical trial

A

Randomized clinical trial

45
Q

In a case- control study, the likelihood of developing disease
in the cases and control group is compared using a/an
- Relative risk ratio
- Attributable risk statistic
- Odds ratio
-Absolute risk statistic

A

Odds ratio

46
Q

If a person who does not have a disease has a negative
screening test for the disease, the results would be considered a
- True negative
-False positive
- True positive
-False negative

A

True negative

47
Q

Screening program to detect people likely to have latent
disease are an example of
- Primary prevention
- Secondary prevention
- Tertiary prevention
- Primordial prevention

A

Secondary prevention

48
Q

The ability of a screening test to correctly identify who has a
disease is the tests
- Reliability
- Positive predictive value
- Sensitivity
- Specificity

A

sensitivity

49
Q

The terminology screening and diagnosis can be used
interchangeably
- True
- False

A

False

50
Q

The ability of a screening test to identify people who do not
have the disease is known as
- Sensitivity
- Negative predictive value
- Specificity
- Accuracy

A

Specificity *

51
Q

If a person has a negative screening test for a disease, that
means that the person is not at risk of developing the disease
- True
- False

A

False

52
Q

Screening is designed to identify cases during which stage of
the disease?
- stage of susceptibility
- stage of preclinical disease
-stage of advanced clinical disease
- stage of recovery

A

stage of preclinical disease

53
Q

Endemic means that a disease
- Occurs at a higher-than-expected rate for the population
- Appears sporadically in the population
- Is habitually present in the population
- Is present in lower-than-expected number in a population

A

Is habitually present in the population

54
Q

An outbreak of salmonella occurs in a community. The outbreak is traced to undercooked chicken served at a potluck supper. This type of outbreak would be classified as a
- propagated epidemic
- point source epidemic
- intermittent source epidemic
- mixed epidemic

A
  • point source epidemic
55
Q

during the outbreak of an infectious disease, the geopgraphic distribution of cases should be described using a/an
- epidemic curve
- line chart
- spot map
- histogram

A

spot map

56
Q

. an epidemic curve is used to display the geographic location of the cases of illness
- true
-false

A

false

57
Q

during an outbreak, disease control measures can be directed toward the (select all that apply)
-host
-reservoir
-agent
-portal of entry
-mode of transmission

A

-host*
-reservoir*
-agent*
-portal of entry*
-mode of transmission*

58
Q

a person with highly contagious and life threatening disease such as ebola should be quarantined to prevent the spread of disease
-true
-false

A

False

NSG 522 Biostat Final (6 decks)

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