Flashcards in Types of observational studies Deck (5)
Collects data from a group of people to assess frequency of disease ( and related risk factors) at a particular point in time.
- Can show risk factor associated with disease BUT cannot show incidence of disease
Observational + Retrospective
Compares a group of people with disease to a group without disease.
Looks for prior exposures or risk factor
- Odds Ratio
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)
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