Epidemiology Flashcards

1
Q

what is meant by epidemiology?

A

the study of populations in order to determine the frequency and distribution of disease

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2
Q

what are the three main types of epidemiology studies?

A
  • descriptive
  • analytic
  • intervention/experimental
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3
Q

what is meant by prevalence of disease?

A

a measurement of all individuals affected by the disease within a particular period of time or point in time

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4
Q

how do you work out the prevalence of a disease?

A

number of affected individuals (cases) divided by total number of persons in population

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5
Q

what is meant by incidence of disease?

A

a measurement of the number of new individuals who contract a disease during a particular period of time

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6
Q

what are the advantages of using a sample, instead of surveying whole population?

A
  • reduces cost
  • higher response rate
  • less time
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7
Q

what is important when selecting a sample for a study?

A

sample must be representative of the population being investigated

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