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Flashcards in Types of observational studies Deck (5)
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1

Cross sectional

Collects data from a group of people to assess frequency of disease ( and related risk factors) at a particular point in time.

-Disease prevalence
- Can show risk factor associated with disease BUT cannot show incidence of disease

2

Case-control study

Observational + Retrospective

Compares a group of people with disease to a group without disease.
Looks for prior exposures or risk factor

- Odds Ratio

3

Cohort Study

Observationa + Retrospective/Prospective

Compares a group with a given exposure or risk factor to a group without such exposure
- Looks to see if exposure increase the likelihood of disease.

-Relative risk (RR)

4

Twin Concordance Study

Compares the frequency with which both monozygotic twins or both dizygotic twins develop the same disease

- measures heritability and influence of environmental factors
- nature vs. nurture

5

Adoption studies

Compares siblings raised by biological vs/ adoptive parents:

measures heritability and influence of environmental factors