Clin. Epi. Study Designs - Observational Flashcards

1
Q

describe epidemiologic study designs and increasing strength of evidence

A
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2
Q

describe case control studies

A
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3
Q

describe cross-sectional studies

A
  • measure the prevalence of disease
  • assess both exposure and disease at the same time (simultaneously)
    • no time lapse
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4
Q

describe ecological studies

A
  • cross-sectional ecological studies relate the frequency with which some characteristic (e.g. smoking) and some outcome of interest (e.g. lung cancer) occur in the same geographic area (e.g. a city, state, country)
  • in contrast to all other epidemiologic studies, the unit of analysis in ecological studies is populations not individuals
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