Public Health Epidemiology/Research Methods Flashcards

1
Q

Define Epidemiology

A

The study of the distribution and patterns of health and disease and their causes in populations

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2
Q

What is Prevalence

A

the number of EXISTING cases of a disease in a population at a given time

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3
Q

What is point prevalence

A

of causes at a specific point in time

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4
Q

What is Period Prevalence

A

of cases over a specified period of time

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5
Q

what is incidence

A

the number of NEW cases of a disease within a specified population during a given time period
** a measure of risk for developing the disease

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6
Q

What are Acute Diseases

A

those that last 3 months or less

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7
Q

what are chronic diseases

A

those that last 3 months or longer

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8
Q

what are endemic diseases

A

Disease that is constantly present in the community or population

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9
Q

what are sporadic diseases

A

a few scattered cases within an area or population

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10
Q

what are epidemic diseases

A

a large number of cases that are out of proportion to what is normally expected

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11
Q

what are pandemic diseases

A

an epidemic that occurs simultaneously on more than one continent

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12
Q

why would public health use the term “association”

A

mean that thing are linked in some way that make them turn up together

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13
Q

what does the term “cause” mean in public health

A

something that produces an outcome

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14
Q

T or F

Most chronic diseases are caused by multiple factors

A

T

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15
Q

What questions to descriptive epidemiological studies answer?

A

Who, When, Where

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16
Q

what is the purpose of Analytical studies in Epidemiology

A

test the hypothesis about the relationship between health problems and risk factors

17
Q

What are the two types of analytical studies in epidemiology

A

Experimental and Observational

18
Q

What is an Experimental Analytical Study in Epidemiology? What is an Example?

A

One where the investigator actually allocates exposure and subsequentyl follows the subjects for the development of the disease
e.g) Randomized Clinical Trial

19
Q

What is considered the “gold standard” for Experimental Studies?

A

Randomized Control trial

20
Q

what are the advantages of a Randomized Control Trial

A
  • You can assume the subjects in each group are similar
  • Bias due to confounding is minimized
  • ability to make causal inferences are enhanced
21
Q

What are observational studies

A

where the exposure status is not influenced by the investigator – the investigator simply observes the natural course of events

22
Q

What are some examples of observational studies

A

Cohorts, Case Controls, Cross Sections an Case Studies

23
Q

What is the difference between prospective and Retrospective

A

Prospective is looking forward (Case Study)
- Cohort is identified in present time
Retrospective is looking backward (Case-control)
- outcome events are identified from existing records