HESC 401 Chapter Notes - Chapter 11-13: Relative Risk, Cohort Study, Attributable Risk
Document Summary
Case-control studies and cohort studies are best used when attempting to discern the etiology of disease. Rcts, cohort, and case-control studies all determine the incidence of a certain disease regarding a specific exposure or characteristic. Absolute risk: the incidence of disease in a population. It is a measurement of the risk in a group of people with a certain exposure: does not measure non-exposed people however, therefore, exposure is not considered when examining a relationship with the risk of disease. When comparing groups within study, there has to be a variable that is considered to induce a disease (there must be an exposure corresponding to a disease). Case-control studies use odds ratio (or), which is a similar measure of risk: rr cannot be used because incidence is not being found in a case-control study, however, odds ratio can provide a good estimate. If or=1, there is no association between exposure and disease.
