NURS 420 Exam 3 – Questions With A+ Solutions
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Practice questions for this set
Learn 1 /7 Study using Learn
an around-the-clock environmental surveillance program that samples air
Choose an answer
1 What is BioWatch? 2 Who is John Snow?
What is a big indicator of health in a
3 Define prevalence proportion 4
community?
Don't know?
Terms in this set (145)
Who is John Snow? The father of epidemiology
He found the source of the 1850's cholera outbreak in
London
What is epidemiology? It investigates the distribution of health events in a
population (who, what, when, where, why)
What is descriptive epidemiology? Describes disease according to person, place, time
,What is analytic epidemiology? Describes origins or causes of disease (how/why)
What is a big indicator of health in a Infant mortality rate
community?
How do you calculate rate? Number events divided by population at risk, then
multiplied by 100,000
In 2017 there were 2,813,503 deaths in 0.23, or 23.0%
the U.S.
647,457 of the deaths were caused by
heart disease
What was the proportion of deaths
attributed to heart disease?
All cases are called what? Prevalence
New cases are called what? Incidence
Define incident rate rate of development of new cases in a population at
risk
Define incidence proportion proportion of population at risk that experiences the
event over some period of time
At a hospital screening program for 20/7965 = 0.0025109 or 251 per 100,000
breast cancer, 8000 women were
screened.
35 were previously diagnosed with
breast cancer
20 with no history of breast cancer
were found to have cancer of the
breast
Define prevalence proportion Number of existing cases divided by current
population
, Screening discovered 35 women of 55/8000 = 0.006875, or 687.5 per 100,000
the 8000 screened had previously
been diagnosed with breast cancer
and 20 with no history were
diagnosed as a result of screening.
What is the prevalence proportion?
When is prevalence useful? Determining chronic illness, planning health services,
determining HCP needs, evaluating treatments
When is incidence useful? When studying cause. It is only affected by factors
related to the risk for developing disease. Influenced
by preventative health measures
What is the attack rate? The # of persons exposed to an agent who are sick
What is the case fatality rate? # of deaths from a specific disease in a given time
period
What does the Epidemiological All diseases are affected by an agent, host, and
triangle state? environment. Changes in one element can influence
the occurrence of disease
What does the web of There are a lot of different causes of disease
causation/causality state?
What is the relationship between Prepathogenesis - health promo/disease prevention
natural history of disease and levels of (primary)
prevention? Early pathogenesis - restoration (secondary)
Pathogenesis - rehabilitation (tertiary)
What is the goal of screening? To determine the likelihood that these individuals will
develop the disease
What is included in an effective REFERRALS for diagnostic eval for those who screen
screening program? positive
What is reliability vs validity? Precise vs accurate
Save Groups
Practice questions for this set
Learn 1 /7 Study using Learn
an around-the-clock environmental surveillance program that samples air
Choose an answer
1 What is BioWatch? 2 Who is John Snow?
What is a big indicator of health in a
3 Define prevalence proportion 4
community?
Don't know?
Terms in this set (145)
Who is John Snow? The father of epidemiology
He found the source of the 1850's cholera outbreak in
London
What is epidemiology? It investigates the distribution of health events in a
population (who, what, when, where, why)
What is descriptive epidemiology? Describes disease according to person, place, time
,What is analytic epidemiology? Describes origins or causes of disease (how/why)
What is a big indicator of health in a Infant mortality rate
community?
How do you calculate rate? Number events divided by population at risk, then
multiplied by 100,000
In 2017 there were 2,813,503 deaths in 0.23, or 23.0%
the U.S.
647,457 of the deaths were caused by
heart disease
What was the proportion of deaths
attributed to heart disease?
All cases are called what? Prevalence
New cases are called what? Incidence
Define incident rate rate of development of new cases in a population at
risk
Define incidence proportion proportion of population at risk that experiences the
event over some period of time
At a hospital screening program for 20/7965 = 0.0025109 or 251 per 100,000
breast cancer, 8000 women were
screened.
35 were previously diagnosed with
breast cancer
20 with no history of breast cancer
were found to have cancer of the
breast
Define prevalence proportion Number of existing cases divided by current
population
, Screening discovered 35 women of 55/8000 = 0.006875, or 687.5 per 100,000
the 8000 screened had previously
been diagnosed with breast cancer
and 20 with no history were
diagnosed as a result of screening.
What is the prevalence proportion?
When is prevalence useful? Determining chronic illness, planning health services,
determining HCP needs, evaluating treatments
When is incidence useful? When studying cause. It is only affected by factors
related to the risk for developing disease. Influenced
by preventative health measures
What is the attack rate? The # of persons exposed to an agent who are sick
What is the case fatality rate? # of deaths from a specific disease in a given time
period
What does the Epidemiological All diseases are affected by an agent, host, and
triangle state? environment. Changes in one element can influence
the occurrence of disease
What does the web of There are a lot of different causes of disease
causation/causality state?
What is the relationship between Prepathogenesis - health promo/disease prevention
natural history of disease and levels of (primary)
prevention? Early pathogenesis - restoration (secondary)
Pathogenesis - rehabilitation (tertiary)
What is the goal of screening? To determine the likelihood that these individuals will
develop the disease
What is included in an effective REFERRALS for diagnostic eval for those who screen
screening program? positive
What is reliability vs validity? Precise vs accurate
