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Jan 18, 2016 · A common kind of coincidence, for example, is one in which you think of a friend and that friend calls you. Your first thought might be, “What are the chances?” In the previous post, we bumped...
We can use odds to compare different probabilities, by computing what is called an odds ratio – which is exactly what it sounds like. For example, let’s say that we want to know how much the positive test increases the individual’s odds of having cancer.
The odds ratio is used when one of two possible events or outcomes are measured, and there is a supposed causative factor. The odds ratio is a versatile and robust statistic. For example, it can calculate the odds of an event happening given a particular treatment intervention (1).
- Mary L. McHugh
- 2009
Aug 29, 2019 · If the odds ratio for group a (compared to group b) is 1.75, can I say that for every 175 persons in group a that experienced the event, 100 persons in group b did, while controlling for the other variables? My second model has an odds ratio less than 1 so I would use the quoted example. Are there any concerns with this approach?
Sep 3, 2016 · Odds Ratio (OR) is a measure of association between exposure and an outcome. The OR represents the odds that an outcome will occur given a particular exposure, compared to the odds of the outcome occurring in the absence of that exposure.
Odds ratios OR are often reported alongside a confidence interval (CI). A beginner's guide to interpreting odds ratios, confidence intervals and p-values written by Tim Hicks. Idiot's guide to Odds Ratios with some simple examples and links to Risk Ratios by Clay Smith.
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May 22, 2023 · The odds ratio is a ratio of two sets of odds: the odds of the event occurring in an exposed group versus the odds of the event occurring in a non-exposed group. Odds ratios commonly are used to report case-control studies.